I'm not that fussed about either tbh. A former housemate had a 360 and it was fine apart from the network card didn't work, so I never could test out the online shizzle. I bought the PS3, not just for the games, but the fact it was only £200 on a special offer at Sainsbury's, and has Internet, iPlayer, media centre client abilities and a great Blu-ray player. Overall, I'm pretty happy with it. I pretty much only play pro-evo on it anyway!
Each to their own, and all that.
I also hope the big console makers can get together and work out a format for their online stuff, to allow players from to play online against either other, regardless on the console they're using. Who knows?