http://www.gamestop.com/Browse/Search.aspx?N=141+196
It says the 60 gig is the version that is backwards compatible. That's according to G-stop. Says that's why it costs more. I PERSONALLY think the PS3 is the better value, with the BlueRay, and FREE online. God of War 3 is no joke (if you like that type of game) There seem to be GREAT arguments for both systems though.