The XBOX has come a long way in my opinion but SOny has always been good for making great gaming consoles. But the PS3 will probably cost anyone a small fortune which won't be too much of a setback since people loves vid games and will find some way to own one.
As for the Wii, I don't know. I suspect it'll do nicely and any avid gamer will probably buy one just so they can have it. That sorta thing.
And I really wanna vote for the PS3 but I can see it having some probs if it has the same overheating problems as any of its previous consoles. But this too can probably be avoided if you have a solution for it. (I know several people that made their own make shifts console coolers)
And since I'll probably never completely get over my distrust of the XBOX. . . well then it's settled. I'm voting PS3.