I chose to save the base because Martin Sheen told me to.

I guess the intense, Ben Linus (I've used that reference too much, probably) level conspiracy I can't get past is the possibility that the Illusive Man, himself, is a pawn much in the way Saren was. I mean, we know how trustworthy organics with glowy eyes are (see: Saren). 
 
But, in all seriousness, the audience doesn't have enough evidence to confidently align themselves with one camp or the other. It is all speculation. But if the Illusive Man is, in the strangest, most tangential likelihood, an agent for the Reapers working an elaborate plan to gain the trust of humanity's most formidable figurehead, then there is no way we can allow him to regain the tech we just worked to destroy. 
 
Again, there is a lot in the way of debunking this straggled, haphazard theory of mine, but I'm a man of certainty. A realist, if you will. I would rather guarantee that the Illusive Man--who is inherently untrustworthy--cannot reap an advantage from hyper-advanced technology, as opposed to risk any number of frightening, amorphous fates by letting the Collector technology survive. 
 
This is interesting, guys. Keep going with this.

Blew it up.
 
IT'S TOO MUCH POWER!

B with my first character. A with my second, duhhh... 
 
Since were talking about Spoliers I also chose to DESTROY the Geth in Legion's loyality quest, just in case you thought I was playing through all paragon like.  I hate Geth, can't be trusted,  I call em' like I see em'.

" B with my first character. A with my second, duhhh...  Since were talking about Spoliers I also chose to DESTROY the Geth in Legion's loyality quest, just in case you thought I was playing through all paragon like.  I hate Geth, can't be trusted,  I call em' like I see em'. "

 
@Sir_Ragnarok said:

" @MikeFightNight said:

" B with my first character. A with my second, duhhh...  Since were talking about Spoliers I also chose to DESTROY the Geth in Legion's loyality quest, just in case you thought I was playing through all paragon like.  I hate Geth, can't be trusted,  I call em' like I see em'. "

Oh, dude. I unified the Geth with the (idealistic) hope that they'd align with humanity in some epic, Return-of-the-Jedi-scale space battles. "  

After you blow it up and go to the debriefing on the Normandy, he starts to show some of his true colors when he mentions that his goal is to keep humanity on top and stop the reapers - or anything that comes his way. He has no checks and balances, he could do whatever he wants with the technology, and cerberus already has a pretty extensive record of doing morally fucked things.

" After you blow it up and go to the debriefing on the Normandy, he starts to show some of his true colors when he mentions that his goal is to keep humanity on top and stop the reapers - or anything that comes his way. He has no checks and balances, he could do whatever he wants with the technology, and cerberus already has a pretty extensive record of doing morally fucked things. "

Blow it the fuck up; I place no trust in Cerberus or the Elusive Man.

I destroyed that mo'...one of the few paragon choices I made.  Cerberus bugs me especially with that d bag at the helm

I blew the base up because I thought that it would be safer for my team. No one had died yet, and I didn't want to risk losing anyone in my squad. 
 
It paid off.

Shepard has all the evidence he needs for the council. They have no reason not to back him and with an army of geth and rachni, keeping the base was uneccesary.
 
Plus Cerberus has an agenda and their extremes are for far greater then I want to reach.

I went B. My characters a pure paragon, and I like big explosions.
 
Win, win.

" I went B. My characters a pure paragon, and I like big explosions.  Win, win. "

I've done both.  My grey character (and my Renegade character when I get to it) saved the base while my Paragon character told TIM to fuck himself and Miranda did too.

B... destroyed the base and ruined any chance of humanity learning about the Reaper technology.
 
If Dollhouse taught me anything... its to not trust the tech.

even thought I was a renegade sherpard, I choose B)

I destroyed it. Almost saved it but I was happy with my choice when the illusive man said why he really wanted the base. I don't want the human race to turn into space Nazis

The Illusive Man and his lung cancer can go die in a horrible fire.  Just like that base did. 

I saved the base.
 
It was a tough decision, but I felt we need any advantage we can get in the fight against the Reapers.
 
That said, I regretted it once I saw the look on The Illusive Man's face after the debrief.  Now I'm worried.

I blew the base up. Seemed like the right thing to do. I don't trust the Illusive man and his crazy eyes. I think he is a Reaper in disguise. No human has eyes like that

Gonna have two saves just in case. But my first thought was to destroy it, but then I decided that we should keep it....

I saved the base not knowing that it was going to Cerberus, who I do not trust at all.

i blew it up.

I blew it up, because I may have saved it the 'first' time and I may have not like what the crew members may have said to me afterwards. So of course I chose B)! BOOM! Eat it, Illusive man. "I'm going to win this war, and I'll do it without sacrificing our soul as a species."

Compared to the final choice in the first game I thought that this was very tame. In the end the final choice of ME1 didn't play a significant role whatsoever in ME2 so I doubt this choice will have much lasting impact either. I chose to chose to save the base as it was the renegade choice but I didn't think it was much of a renegade thing to do anyway.

I blew it up. After seeing what reapers could do to people in the mission where you find Legion, I figured trying to research this would end up being much more harmful to the war effort.

Blew it up first playthrough, saved it in the second. The Illusive Man might come through for us in ME3 and stay true to his word. 
 
I do believe that he does have the best interests for humanity.

My Shepard, though a neutral paragon-leaning kind of guy decided to keep the base  - fully expecting Cerberus to misuse it. 
 
I for one believed the Sovereign when, in the first game, it told me about the immense preponderance and complexity of the "Reaper" race. Their ascendancy over any known race must be complete since they are the architects of the intergalactic systems which we inhabit like cattle in a cosmic meat grinder, or lab rats in a maze. Have your pick.  Sure, we bit the hand when they first elected to begin the harvest of organisms but I feel that this is no cause for complacency. I figure the only way to defend ourselves will be to get a hold on their technology somehow and use it against them, even if we don't understand it ourselves.  
 
Cerberus is the only logical choice for there. Be it as it may that my Shepard has animosity towards the organisation in general.  
Here's why Cerberus: Any individual or organisation is likely to become corrupted by the power that the new technology gives them. Even the generals at the Alliance could eventually walk over many bodies, of all species in order to hang on to it. They may be, like Saren, convinced, bribed or turned by the Reapers if they are weak minded and opportunists. 
 
Enter Cerberus - Here is an extremists organisation of ideologues. They are xenophobes and employ terrorists tactics and much worse in their fanaticism for what they call "Human Survivalism" .  
 
To wave off the corrupting influence and irrationality that would inevitably come with the technology the most important thing is incredible Zealotry like that you find in a ideological terrorist organisation where ideals and minds aren't persuaded by any emotional appeal. Cerberus motivations and psychology is a known quantity. If they become powerful then we know what we fight, and we know that in their rationality they do not wan't an empty galaxy like the Reapers.  
 
I saved the station expecting a fight with Cerberus to be in my future. It's like why it's worse for Iran to have one nuclear warhead than for the Union of Soviet Socialist Republics to posses a thousand. It's all in the psychology of irrational clergymen who might want a nuclear exchange even more because it will ensure mutual destruction between it and it's enemy. The communists where rationalists, materialists who are therefore possible to fight despite their apocalyptical weaponry.  I'll choose a stand off with an armed Cerberus any day before an unarmed confrontation with the Reapers.  

B. B. B. B. B!!!! Pure Paragon all the way.
 
I saved the council in the first game, Do you think I'm going to let the Illusive Man kill them using the Collector/Prothean Technology? Fuck No. DO you think I'm going to let him make a new Reaper? Fuck No. I wouldn't trust the Illusive Man with a god damn slingshot, let alone one of the most powerful technologies in the galaxy. 
 
Also, heres to hoping we get to save the Quarian Homeworld in  ME3. Getting Tali's Loyalty (and telling the Quarians not to go to war), and getting Legion's Loyalty (and assimilating the heretic Geth), AND maintaining both their loyalties sure as hell better save the homeworld.

B. I didn't play my game trying to be full paragon... but come on!  Me throwing that guy out of the window and not saying anything to the quarians about war is one thing, but I'm not giving extremely dangerous technology to a terrorist group. 
 
Look I was fine with killing the council in the first game (the fleet needed to take their shots at sovereign, I wasn't going to put them in danger to save the lives of a the few). But this... this is just too damn risky.

i destroyed the base on my first paragon play through, i'm going to be a dick on my second play through though and save it.

The entire game I was waiting for the Illusive man to stab me in the back at the end. Having experienced the evil that Cerberus is capable of in ME1 I was not about to let them get their hands on Reaper technology. Certainly they would be more than willing to work alongside everyone to defeat the Reapers, after all they threaten everyone's existence. But once the battle is fought and won you can bet that Cerberus would turn that technology against everyone to assume dominance in the galaxy (If it doesn't end up enslaving them through indoctrination).
 
One thing I've been wondering, is there perhaps another power behind the scenes directing the Illusive Man? Or is he the top of the food chain as far as Cerberus is concerned?

I destroyed the base because I wanted paragon points.

Am I the only one deeply disturbed by the fact that both in ME1 and ME2, Alliance and Council weren't fully commited against the Reapers because of a lack of  "evidence"? I mean, in such an advanced technological age, how could Shepard not have any video evidence of the Reapers (as well as that famous dialog with the VI on the Promethean world) ?
 
Anyway, back on topic. I picked B because of what happened on the derelict Reaper (Cerberus entire team indoctrinated so easily by a dead Reaper), my memories of ME:1 Cerebus (plus Jack) and the fact that the Illusive Man is way too shady to be trusted.
I destroyed the base, I believe it was the only logical course of action. My Shepard is mostly Paragon, but don't hesitate from times to times to walk the Renegade path (I didn't save the council) : she* uses her brain and fight to defend the Galaxy.
I loved the Illusive Man character, he felt as the major player of ME2 until the end and that famous choice B. When Shepard blew up the base, she finally regained control, and the words of the Illusive man were clear enough : he wasn't to be trusted in the first place. Having played all the Cerberus sidequests in ME1 (plus Jack sidequest), I also remembered how ruthless this organization was. Sure the Illusive Man wasn't really the one who ordered experiments on Jack, rachni, Thorians, Kohahu assassination, but he sure is the mastermind of this corrupt organization. It's easy to say the End justify the Means, but it doesn't seem that the Illusive Man has the same end goal as you...
 
As for the consequences of going against the Illusive Man, I think it'll mostly decide which human side you'll be in ME3. Alliance or Cerberus ?
 
It's hard to foresaw the effect of your choices, even the ME1 choices will only have an effect in ME 3 (Rachni at your side, Wrex and Krogans reunited, Turians and some council species going to war or not against humans – heavy hints about that in ME2, etc.). Obviously, the Shadow Broker will be part of the plot, since he was helping the collector, according to Liara.
 
 
* : I tried to play a "he", but seriously, the female Shepard VA is better.

I blew it up because nothing says I quit like setting off a nuke!

Blew that baby sky high.

I'm kinda leaning on blowing it all up, but I don't know... Cerberus gave me a ship, crew, a new life. I feel like I'm on a first date and he takes me to a movie, buys me dinner... I gotta put out. 
Besides, keeping it would be worth it if you get a kick-ass rifle in ME3, but I seriously doubt that. I didn't save the Council (stupid me) but I'm gonna make it up by not giving them the info. If all options fail, we'll turn Al-quaida against them... hehe they'll never know what hit'em.

i destroyed it. i agree with Legion and Mordin that galactic civilisation needs to progress much more in order for it to be trusted with the responsibility that the Reaper tech would of given them. also as legion said, we should try to build our own non-reaper based tech if we wish to successfully fight the reaper.

 B) I did the impossible twice, might as well do it a third time aye?
 
Nah point being, I value teamwork and willpower (and I'm an adept, go figure) above all else in my Shepards story.
We can accomplish great things if we work together and give it our all.
 
But if you think about it logically, we might be better of with the tech, but I ain't trusting Cerebus for that tho,

This is my logic.
 
Millions upon millions of people have died, and more would have been further abducted.
 
You destroy the Reaper - You let all those people's chances of ever getting back at the reapers, even in death, just slip away in one big blast. You also get rid of any chance of making a discovery of weakness for reapers or even using one to fight another.
Basically my bottom line with the descision is that destroying the reaper made millions of deaths completely pointless and for nothing. I'm not arguing that for the sake of letting people have a post mortem revenge, I'm making the best of the situation at hand and turning their own action against them.  But yeah Im aware of the thing, be careful when fighting enemy x, lest you become one. I still think using the human-reaper is the right thing to do.
My friend argued with me that "I was using the idea of millions dying as an ingredient for a reaper weapon" and I just told him back that if it never came to this then I wouldn't be arguing that. It wasn't my choice that all these people were mulched into one big weapon but why just let them have died in vain?  Even if Cerberus was to sell you out, it's not like Shepard doesn't have some really powerful people and really sad people on his side...
 
...including Conrad who would probably cause the Reapers to explode in sheer rage at how much he'd be asking them for an autograph. I also think that knowing your enemy inside out really helps. *Add Perk - Favoured Enemy: +9000 Damage Against Reapers*

The only thing I hope they don't do is, "if you saved it, then the Illusive Man turns out to be a reaper!", or some other game-destroying plotline such as that, because it's going to render the second game useless.

I turned my Xbox off because I couldn't decide.

Shepard doesn't need technology to defeat the Reapers.  Shepard could take down Sovereign with a pointy rock if she needed to.