if you\'re really going to play ur ps2 games, and if you have a decent amount of ps2 games, Then i\'d get the 80 gig.
Personally, id get my fill of shadow of the collosus and god of war 2, and then sell everything so i can get the 40 gig for cheaper...but a lot of people dont like to trade in their stuff since it is kind of a rip off. but id rather get ripped off and still get 80-100 bucks off than let it collect dust.