60GB is the one too have really but as you cant buy them anymore, id say 80gb

80GB is a 40GB basicly but with bigger hard drive, as everyone said

40GB & 80GB - 2 USB Ports, Cant play PS2 games (why would you anyway?) etc etc

60GB - 4USB hub's, you can play PS2 games ( i have never played any anyway) etc


you get the idea?

go for the 80GB....might aswel