Well, at the end of the day, if you like VIDEO GAMES then you're going to be happy with either console. And since you're posting here, you must like video games!
I mean, the PS3 and XBOX360 get a lot of the same games. Some BIG TICKET titles like MGS4 or Halo 3 will stay on one system, and, in this case, the 360 has the most interesting exclusives at the moment (though many of its exclusives are also on PC). Plus, XBOX Live is a really solid service, and though it costs money to play games with others, it's extremely affordable and pretty worthwhile I'd say. I picked up the Elite a few weeks back and I do like it a lot. As others said, the PS3 is a cheap Blu Ray player that ALSO PLAYS COOL GAMES which is a pretty great selling point in and of itself, because Blu Ray is probably the next step for movies and shit! Also, the Dual Shock really is the best controller design ever, there's a reason Sony hasn't bothered updating it much over the years - it just doesn't really need it.
Best solution: BUY BOTH hehehehhehehehehhehehe
But I'll say it again - no matter which you choose, you'll probably have a lot of fun in the end.
WHY SO SERIOUS HAHAHAHHAHAAHAHAHAHAHAHHAHAHAHHAHAHAHAHAHAHAHAHHAA