Lately, it's been my 360 more, though that position tends to alternate every couple months between Wii60.
So, overall, a tie between Wii and 360, with the PS3 in last. Wii just has too many fun multiplayer games (in addition to some epic single-player stuff). The 360 offers an unparalleled online experience and has given me my biggest library of games for a single console since the SNES (not including handhelds). Any multiplat online game I'm interested in automatically goes to the 360.
It's not a dis to the PS3, it's just that, for one reason or another, the Wii60 have appealed to me much more.
However, my DS pwns them all, with respect to time played, library size, and favourite games 







