XBox 360 or PlayStation 3 -- Which is powerful?

May be there are some gamers here .. if so .. what you guys think which is more ..

I just wanna ask what would u prefer if you got chance to choose form XBox 360 and PlayStation 3 ..
Currently i have PS2 and want to upgrade ..

any recomendations? personal likes and dislkes?

Apparently the PS3 is 35 times fast than the PS2 and I am sure that the Xbox is not that good. I hear that there are better games with the Playstation.