I won all 3 consoles, so I'll say something nice about all of them. Just for fun I'll order them from best to worst (imo)
1) 360 - Best online, best controller, deep lineup of games.
2) PS3 - great 08 lineup, 09 looks strong, video playback is world class, solid design
3) Wii - I love how it's made for everyone and it's pushing gaming boundaries with products like Wii fit. I'm a huge super mario fanboy.