I know this post is old but since SNES is one of my fav. systems I wanted to add a reply.
Personally I prefer the real SNES + SD2SNES Flash Cart (http://shop.retrogate.com/SD2SNES-SD2SNES.htm) but not the cheapest way to go but beats buying all the original carts unless you are a die-hard collector. Though I actually don't play many games this way - I got it more for Dev. and ROM hacking.
The Wii homebrew can run a port of SNES9x which is pretty good (http://wiibrew.org/wiki/Snes9x_GX) and in some ways better then the real SNES. Obviously you can do 480p on a Wii and 1080P on a Wii-U, SNES can be modded but the best you can get is 480p or RGB.
The Wii classic controller is OK, but the wire is in an awkward place, it should have be wireless but wasn't. You can also pick up the SNES controller adapter from RetroUSB.
To me the Wii's emulation is 99%+ not much of a difference to complain about and in some aspects better. Not sure that retro systems are for non-collectors and even the best way to go these days since Audio/Video equipment keep changing.