Right now I am sporting Wii and PC. I'm going to be honest. 360 is a great console with great games. The thing is, PC gets (almost) all of the good 360 games. Even more so, the PC versions tend to look better, have tons of mods that drastically enhance the game (oblivion) or even come with tons of extra content (isn't Gears of War coming with extra crap?) So while the 360 (and the PS3 to a lesser extent) has quite a good library, most of the good games on those consoles also come to PC (of course there are exceptions) with, as previously stated, more content and (potentially) better visuals.
Although this is a sour issue, and I'm surprised it hasn't been brought up yet, piracy is a lot easier to pull off on the PC, which I guess could be a ... pro?... for PC gaming.
And of course, Wii is a Nintendo console... I've grown up with Nintendo (and Sega) and I love all of the characters and franchises that go along with them. The fact that I can play Mario, Zelda, Sonic and now even NiGHTS, on one console makes it a necessity. It just feels like all of the classic franchises finally coming together on one console. The fact it's cheap, and offers a new fresh control scheme only sweetens the deal. Having a 360 would merely be another unnecessary clump of hardware that serves no purpose over my PC... anything a 360 can do, my PC can do too (usually better.) The Wii offers something my PC does not, both in hardware (wii remote) and software (Nintendo franchises).
Here's a video from my band's last show Check out more (bigger) videos here http://www.youtube.com/user/icemanout
