I voted the 360 for the same reasons as everyone else said.
The Wii has an amazing concept, but... its just not up to par with serious gaming
IMO. I've had a chance to play one a couple times, and I found myself each time saying "I PUNCHED/SWINGED/HIT/ECT WHY DID MY CHARACTER JUST *enter random, unrelated control here*!?!?!"
The motion sensor is cool, but 100% motion control just is a bad idea
IMO. You want reliable controls, and not something that could misread a movement. Also, when I get really into a game, I like to play for a while. I would have chronic Wiiinitis! The last time I had an ailment from a video game was from red sore thumbs from playing Ape Escape
on the PS2. Its not happening again.