360, the only reason that is, is cuz I have Live, a mic, and more games for it.
All I have on PS3 is Resistance 1-2 and MGS4 (but I'm not palying it til I play the other games). And yes I do have PSN, but no mic. So until I get more acessories and whatnot for the PS3, it's 360 that wins IMO.
I am looking into more for the PS3 though as I just got the HD cable which makes the graphics and blu ray beyond amazing