Loved both, but I can understand the reasons why people didn't like them.

I thought both were great

I really enjoyed both of them, though RDR completely > GTAIV.

I'm madly in love with both. Not literally, of course. And I'm talking about the games, not Brad and Jeff. Although I do like them a whole lot.  
 
I think The Ballad of Gay Tony would have to be my favorite out of all of them.

" Nope, love them both. But i always love Rockstar open-world games. The Gta Games, Bully and Red Dead are some of my favorite games of all time. "

LIke both but I like GTAIV considerably more, I found RDR quite tedious at times and I didn't feel it had a satisfying difficulty curve.

I think RDR is pretty good and one of the best last year, but it goes a little flat after the first few hours.  There are clearly a lot of improvements to the GTA formula that will carry over, but I think GTA4 is one of the top 10 games released this cycle.  It's weird, I like RDR and can see in a lot of ways where it is flat out better, but I'd much rather play any post-3 GTA game.
 
I guess to be clear:  I like them both, but am kind of a GTA fanboy.

" I'm madly in love with both. Not literally, of course. And I'm talking about the games, not Brad and Jeff. Although I do like them a whole lot.   I think The Ballad of Gay Tony would have to be my favorite out of all of them. "

I loved GTA IV (got 100% completion and played both DLC episodes), but kind of had to force myself to finish RDR, after which I couldn't care less about any multiplayer or DLC or side-missions. It's not that RDR was a bad game - it definitely wasn't. I think I'm just not that into westerns, mostly.

GTA IV was a masterpiece.

I thought both were great. 

I didn't play GTA IV when it came out, but I did pick up RDR and loved the hell out of it.  I loved it so much that as soon as I finished the story in RDR I put GTA in thinking I would finally give it a try, but I just couldn't get into it.  I don't know if the order I played them in was the mistake though; it could be that I would have loved GTA if I had played it first.

I hate the GTA series in general, well find every game really boring but I found RDR to be bearable. I just hate the kitchen sink approach when you have a lot of options but those options are very shallow. Plus the combat was just too easy. My favorite part about RDR has to be the setting and the horse controls. The story is overrated but some of the set ups of he missions were interesting.

GTA IV sucked because of  lack of checkpoints.  RDR and subsequent GTA addons addressed that issue.  All developers should take note, if you do a mission that takes 20 minutes, and you  die at minute 18, don't make gamers do the whole fucking missions again.  I never beat GTA IV because of this fact.  

I enjoyed both of them. Preferred GTA IV mostly because of its setting, though.

 
I really enjoyed GTA4, it remains one of my favourite games from this generation, i bought a 360 just to play it and i wasn't disappointed with it; and it has since been the only 360 game i've paid full price without waiting for reduction (and will most likely if i have the money at the time be followed by LA Noire) it was also the first GTA game in which i've finished the story - thinking of playing through it again soon actually 
  
however i don't get the love for Red Dead; its a fantastic game and i'm enjoying it, almost finished it  - put 20 hours in so far, i enjoy the universe but there's a hollowness that is the antithesis of the GTAIV universe which was so lively and active that it made you completely believe in it, Red Dead by contrast feels like a Wild West simulator - i love playing it, if i can use that analogy, as a 'wild west simulator' but otherwise its not terribly fun in that typical GTA fashion 
 
i totally agree that the mechanics of GTA that Rockstar seems to have allow to permeate every open world product they ship such as RDR and it appears LA:N as well, have to be overhauled, its pretty broken, it was fine in 2008, especially as the scope and depth of GTAIV made you forgive them, and i still play it now and it doesn't annoy me, but if they were to release GTAV with similar mechanics or at least without significant update to the gameplay it'll make it a harder sell  
 
but to answer your question; yes, i too, like both brad and jeff

Hated GTA 4 and enjoyed RDR. 

I really love GTA4 and i'm would love to play RDR, but I don't have a PS3 or 360, crossing my fingers that they put it for the PC someday.

I bought GTAIV at full price and initially had a good bit of fun with it, but it got to a point where the checkpoint system (or lack there of) became a major issue. Start a mission, drive to someone else, drive to area across map, cutscene, 20 minute shoot out OH SNAP YOU DIED, go back and start that shit again. Fuck you Rockstar North. 
 
I bought RDR for $15 new off of Amazon during those crazy ass deals, played the hell out of it (Rockstar San Diego knows how to implement checkpoints, huzzah!) and greatly enjoyed it.  I'll admit I'm a sucker for westerns, but I thought it was a great game.
 
The lesson I'm taking away is that not only should I never buy a Rockstar game at full price again, but that every other Rockstar studio is better than North.

Overall I love both of them.  Each one had its own moments of repetition.  I particularly hated the home missions near the end of RDR.  Why they decided to put so many in I have no clue. I got the point after the first two, but no, I had to suffer through like 4 more.  The ending is awesome though, despite the huge downgrade.

I loved GTA4.  But I tried to go back and play and just cant, it is fucking ugly to look at.  But it was a product of its time.  Came out when there were only imitators.  But RDR was good.  I can see why it was game of the game for a lot of people.  But I just could not invest myself into it and just did not connect with me.  I think it is like citizen Kane.  I get why people say it is a good movie, I just dont like it.

I'm a Dave guy myself.

I got bored of both GTA IV and RDR 5-6 hours into them. 
Story had no pull in either and both games felt a little clunky to me. 
Now I loved Saint's Row 2 and the RDR: Undead Nightmare DLC so.. yeah!

Hmm I think that GTA IV was a good game, but it wasn't for me. It just wasn't arcady and goofy enough for my taste. San Andreas and Vice City were way more fun for me and I really had to push myself to complete the game. RDR was great but not as good as Mass Effect 2 if you ask me. 
I guess I am kind of on the Brad train - and we all know where Jeff's loco is heading towards :-D

Loved GTA IV (moslty because of Euphoria) and loved RDR.

I loved both on their own merits. Honestly, I find it impossible to choose a favourite.

" @PrivateIronTFU said:

" I'm madly in love with both. Not literally, of course. And I'm talking about the games, not Brad and Jeff. Although I do like them a whole lot.   I think The Ballad of Gay Tony would have to be my favorite out of all of them. "

From the looks of things, you'd much rather have a Ballad of Gay Jeffy! "

I love Red Dead Redemption on paper - I love sand box-style video games and westerns, but I just couldn't finish it. 
 
GTAIV was pretty good, but the fun mostly came from doing crazy shit.

" Nope, love them both. But i always love Rockstar open-world games. The Gta Games, Bully and Red Dead are some of my favorite games of all time. "

I certainly enjoyed GTA IV a lot, but it also had a lot of issues I didn't like (LIKE THAT DAMN RUN BUTTON NONSENSE!). Most of the issues were solved in RDR though. Most of them. 
 

For me GTA didn't seem to be that much of an end to it all where at least RDR was presented better at having an end to the main story, I finished off RDR but not GTA, maybe it was because the side missions in RDR were less in number or the world less enjoyable to free roam so I finished off that one off but games like GTA or Saints Row I tend to lose interest in after a while.

Never played GTA IV, but I fucking loved RDR!

I liked a lot of GTA IV, but RDR was way better for me. Honestly I think it was the lack of shitty melee that made it better. That and the only thing that I love more than New York is a well done western.

I've tried to start GTA IV on a few occasions and just gave up because it wasn't cracking my coconut.
 
RDR, on the other hand, trashed my sleeping habits like a buffalo in a china shop. SO GOOD.

I couldn't stand GTA IV ultimately but ended up enjoying Red Dead a lot.

"

Never played GTA IV, but I fucking loved RDR!

"

I wanted to like GTA4 but the controls were awful, I played RDR and loved it.

Love them both, hope L.A. Noire raises the bar again!

I liked GTA IV but I must admit I never finished the game and I didn't seem to hold quite the affinity for it a lot of other people did. Red Dead Redemption on the other hand I played to completion and enjoyed all aspects of.

" I'd wait til you've played more RDR before making a judgement, I was pretty impressed at the start too but ending up thinking it was just average.  "

I don't like Jeff because he didn't really give RDR a chance. He didn't even give a real excuse. Just said it wasn't for him. However, I'm not much into Brad either because of Starcraft II. I've played the game and I can't really see what's so special about that game. What makes it any different from other RTS'? Well, besides the fact that it's big in Korea.

Liked GTA IV plenty. Liked Red Dead Redemption more still.

I also think GTA4 is a steaming pile of horseshit, and RDR is also a pile of horseshit but with a lot of perfume and sugar. It still has a lot of underlying issues from GTA4 that bug me but it's at least a bit more enjoyable.

Didn't like GTA4 but definitely RDR (one of my favorite games).
GTA is just a bunch of stupid wannabe gangsters that keep swearing 95% of the time while RDR has fucken style.

loved both

I hated GTA but loved Red Dead and really looking forward to LA Noire.