I have both a 360 and a PS3. I'm not a fanboy. I like the 360, I think it's a great platform, especially Live. But the PS3 is a beast of a machine. You just get so much bang for your buck with it. The PS3 is Sony's crown jewel. They constantly update it. It's really got limitless potential being software based. I think it's just now starting to come into it's own. With Home on the way, in-game XMB, and the software library expanding, you really can't go wrong.
Like I said before, I love Live, Live Arcade...Microsoft has got it going on in that area. But their hardware quality control is horrid. I've had problems with my consoles, first party wireless headsets and controllers. There's really no excuse for first party hardware to be breaking down like that, you might expect it maybe from a cheap 3rd party controller but first party?!?
I love the PS3, actually, I'm thinking about another one so I don't have to move it around contantly depending on whether I'm gaming or watching something on Blu. The PS3 rocks!