dude, don't buy one....unless you're getting it for the blu ray. Games wise there isn't shit. Killzone is their best shooter but you can beat it in like 8 hours if you'r good, 10 if you're fair. So basically unless you LOVE going online to play shooters, it ain't worth it. I'm not too terribly fond of the 360 either, but as of right now it's got WAY better games.
If you've got the scratch, I would actually recommend building a high power computer right now. The console game market is slumping in quality and doesn't appear to be coming back anytime soon.....unless you're a madden and/or GTA mark. I personally never gave a crap about those games so