Well I guess I could add something to this, My brother has a 360 and I have a PS3 To me they are pretty much the same But the graphics on the game that came with it(I bought the 80GB one) just blew me away.What makes the PS3 better to me is that the PS3 has a built in Blu-ray player and a good one at that(this is what sold me lol) and yeah you can by a HD-DVD add on for the 360 but lets face it HD-DVD is not winning the format war right now.
