no. It's the same thing except different menus, and a few games
also, use one ! And ?, those are annoying
LIES. The PS3 is Blu-Ray allowing it to hold more memory in less space on a disc. Also the PlayStation Network experience is free, not 40 bucks a year for XBOX Live.
Go with the PS3... Blu-Ray rocks, and Little Big Planet and Uncharted 2: Among Thieves are good games (GoTYs), and it is all-around cheaper (you don't need to pay for online or a Blu-Ray player!).