Initially i got a PS3 a few years ago (for Blu-ray, used to the controller, exclusives like Uncharted).
A few months back I got an Xbox as I wanted to watch SkyGo on a decent sized screen and play games like BF3 with some mates (online is a lot better).
I don't touch the PS3 that much anymore, usually only if I want to watch something on Iplayer, media centre etc.
Gaming - Xbox
Also you get to play Deadly Premonition on the Xbox, the greatest game ever made.