I bought a 360Elite yesterday. I still have my Wii though.
Why the 360. Hmm, I'm seriously disappointed that online multiplayer is being poorly implemented. I've had the Wii since Dec 26 and the only freaking online game we have is Pokem Revolution (and that's my daughter's)
So, since my son and neighbor have a 360, now I can play games with friends online. Why don't I just use my son's? Well, it turns out the games I think are fun don't allow "on console" multiplay, only system-link or online.
Crackdown is a BLAST.
Oh and one sleeper 360 game which is a blast too - Earth Defense Force 2019. It's only single player or "on console" co-op split screen, but it's great mindless fun.