I'm torn between the Wii and the X-box 360. I love the motion controls on Wii and the fact that it's backwards compatible to the GameCube, that it has the VC and makes it possible for me to play a lot of Zelda's on it. I love the graphics on the 360, that it's backwards compatible to the X-box, that it has the Fable games, the Buffy games and all the Harry Potters (as far as I know the Wii only has the newer HP's - my favorite ones are the first three, which the Wii doesn't have).
So for me it's a tie between the two. I have different reasons for loving'em.