xbox360, i played a PS3 and wasnt that impressed, but we were only playing NFS:C and Blazing Angels Squadrons of WWII.
the one thing i liked about the PS3 is the look of the console. it looks like it belongs with the rest of your entertainment shit. but i guess you could allways buy the
XCM 360 *BLACK KNIGHT*
edit: any word on RockStar coming out with a GTA title for the PS3