I haven't really decided yet... But PS4 might have the edge in large part because of Remote Play.
Sargus's forum posts
As a member of the press (I'm an editor at The Dallas Morning News, and a freelance writer for several sites including GameSpot and Joystiq), I understandably hear this a lot, and I (hopefully understandably) get sick of it a lot. Most of us hold ourselves to pretty high editorial standards when it comes to the things we publish, and yet no matter what we do there's somebody out there saying we're either paid off or just doing it "for the hits."
But rather than make the same arguments over and over again, I instead wrote a big blog post recently that serves as "my official response" to threads like these. No, video game critics are not corrupt; mostly, anyway
I often do a type of post at the Dallas Morning News similar to what you mentioned Jeff doing: It's a post of impressions, not a "review," that says, "This is how I feel about this game right now, before it's released." That also helps me cover a lot more games, since I'm a one-man game coverage team for the newspaper and I'm strict about finishing a game before reviewing it (most professional critics are).
Bottom line, though? Yeah, stop pre-ordering games. I wouldn't do it in your shoes, unless it's a case where I'm, say, ordering something from Amazon for release day delivery of a game I know is good (most recent example: the latest Professor Layton, which had already been released and reviewed in other parts of the world). The games press doesn't care if you pre-order games or not. We have absolutely no stake in that.
That looks like the pin Giant Bomb gave out to people who went to their PAX Prime panel last year. Whether he got it there or somewhere else, it's really awesome to see it in such a prominent place on his desk.
I hated, HATED the slow PSN speeds of the PS3. They were atrocious, and Xbox 360 downloads were faster every single time.
For me, though, PS4 download speeds have been drastically improved. I'm honestly surprised to see someone complaining about them -- which is why I'd be suspicious that something else is going on. Either continued post-Christmas traffic (which, yeah, shouldn't be a problem, but Nintendo's networks are still down too) or perhaps something with your router settings. The speeds shouldn't be as slow as you're talking about.
Are Microsoft able to patch out the dev mode?
I imagine the problem would be that Microsoft has already promised that any retail Xbox One can become a developer console.
I have most of the non-sports PS4 launch titles, and I've spent the most time with Assassin's Creed IV and Need for Speed: Rivals. So I'd suggest Need for Speed.
But if you just want power... Maybe Battlefield or Killzone, I guess.