THIS IS THE ANSWER:
Classic if you want to play VC games.
GC because you NEED it for GC games, and it's arguably the best for Brawl.
Wiimote+nunchuck if you want rumble, Wii functions like a power button and Home, and sounds coming out of the speakers...none of the other options have all that together.
LEFT4DEAD411.COM
Bet with disolitude: Left4Dead will have a higher Metacritic rating than Project Origin, 3 months after the second game's release. (hasn't been 3 months but it looks like I won :-p )