Nothing is better than the Xbox 360. You've got the best graphics, the widest selection of games, the coolest look, plus, you get to show off how great you are to other people with your own personal gamerscore, gamercard, gamertag, game zone, etc. Plus, don't forget being able to download new maps, levels, vehicles, songs, etc. for just about any game you own. You can download fun game demos for free, too. Unlocking achievements makes you feel good.
It's pretty cheap, and I believe has sold more units than the Wii.
Also, most games can be played in HD, up to 1080p or 1080i. You can also download HD movies and trailers...
It's too much fun. You can discover the rest for yourself, Traku.
Also, the Xbox 360 that comes with an HD-DVD player comes packaged with King Kong (2005, HD) as well as the FREE games Forza Motorsport 2 and Marvel Untimate Alliance, neither of which are very exciting, but at least they're free!
I think I've made my point.