X-Box, because I own it and like the games that came out for it. PS2 is second, then GC. I'm not a Nintendo system supporter, its poor and I don't think you can go online with it. Most of Nintendo's games are made by themselves, and most a children based games. I'm sorry to dissapoint alot of you but GC gets beatdown by the bigger systems, and the ammount of DS's I saw that where traded in for PSP's was overwhelming @_@... I am going to buy GC real soon, Sonic Advnture DX (cause I can't find a Dreacast anywhere =|) and the new Legend of Zelda (Zelda to me is one of the only ownage Nintnedo games).
P.S. the reason why Moogy didn't add GC is because this is a Nintendo based forum, it gets a unholy advantage here =|...