For what?
Ps3 is graphically superior and has better online network due to it being free
Xbox360 is better as its got the easily swappable hdd so its easy to play with a new friend
Wii the ultimate group play kids machine, graphically a step backwards but everything is cartoony so doesn't matter, controller not original but an intuitive addition to the console market
I have a wii and a gaming PC as pc's graphics are easily 4-5 years ahead of consoles aswell as the screens its played on and the selection of games is there, Wii for fun with friends.