DLC is king in my book. I played the shit out of GH3 at a friend's house and never bought it for myself because I got sick of the songs. If I could've downloaded the songs for he previous two Guitar Hero games, I would've bought it in a heartbeat. Especially that Amazon $60 deal. Shit, maybe I should've bought it anyway....
Anyway, I think I'd say go Wii, despite what I just said. GH4 for Wii will have DLC, so you might as well buy 3 for the Wii so you can have the controller once 4 comes out. That way you'll have rumble, controller audio feedback, AND DLC. Perfect, really.
My consoles and the fates they suffered:
Atari 7800 (Sold), Intellivision (Thrown out), Gameboy (Lost), Super Nintendo (Stolen), Super Nintendo (2nd copy) (Thrown out by mother), Nintendo 64 (Still own), Super Nintendo (3rd copy) (Still own), Wii (Sold)
A more detailed history appears on my profile.
