You know, a shooter fanboy could come on here and say that console X is better than console Y because it has lots of good shooters. If you don't like shooters, he's not helping you.
So...look at the lists. Seriously. Here, I'll even help you.
http://www.metacritic.com/games/ps3/scores/
http://www.metacritic.com/games/xbox360/scores/
Because you are the only one who knows which console you would prefer. Seriously. I have no idea if you prefer Halo to Killzone, or Ratchet and Clank to Banjo-Kazooie, or Uncharted to Gears of War (random comparison, I know)
I would of course advise that you get a PS3, because it's +1 to PS3 sales, more money to Sony, and I suppose, another person to play online with. But this is coming from a huge Sony fan, so can you take my opinion as fair and unbiased?
If you can, go ahead, buy a PS3 right now. If not, look at those lists. Ignore the arbitrary numbers. It doesn't matter whether one console has more 90+ titles than the other, because chances are you won't like all of those. Look at the games rated 80+, and see which ones appeal to you.
(Former) Lead Moderator and (Eternal) VGC Detective 
