I prefer the Playstation mostly because it's a far more reliable unit than the Xbox. I've had to replace my 360 more times than I'd like to think about. Prior to that, I had several original Xbox consoles break down on me. Granted, the PS2 had its issues, but they were nothing by comparison.
Also, the Playstation supports more RPG titles. I can't play Kingdom Hearts on my Xbox.
Also, the Playstation supports more RPG titles. I can't play Kingdom Hearts on my Xbox.