I'm getting it on PS3, but I don't think there much difference apart from the install disk for Xbox

As long as you have enough HDD space to install the  disc I'm sure you will be fine with the 360 version.

I'm buying ps3 version, free multi player and 1 disk

Most reviews are using 360 version probably because most reviewers are American, number of players online wont be a problem for  either version (its GTA afterall) and I doubt 360 was the lead platform since all the footage we've seen so far were from PS3, unlike with any R* game so far

If all you have is a 360 and you wont buy a PS3 for "one game", because suddenly its the only game available on the PS3, then why is this even a discussion and required a thread for it?

Buy it for 360 and be happy, cause as you said you arent going to buy a PS3.

RAGE engine has always looked and performed better on the 360 so if GTA V does end up better on PS3 it would be a first.

http://www.eurogamer.net/articles/grand-theft-auto-iv-ps3-vs-xbox-360-special-article - GTAIV
http://www.eurogamer.net/articles/xbox-360-vs-ps3-face-off-round-15-article?page=3 - MC:LA
http://www.eurogamer.net/articles/digitalfoundry-red-dead-redemption-face-off - RDR
http://www.eurogamer.net/articles/digitalfoundry-max-payne-3-face-off - MP3

I'd wait a year on the game. Almost assuredly there will be Xbox One/ PS4 versions next year with upgraded features and included DLC.

I'm getting it on the ps3,just because that's what the system I have.I'm sure it'll be the same on both systems.