i play super on an emulator and ADORE the use of my PS3 controller, the buttons are spaced perfectly and the seperate D-pad buttons make wall jumping and moving so smooth, but my finger starts to hurt after long haul playing as it would if you were dragging a finger across bumps for hours on end lol
I own an snes adapter, for use with the wii. It was a gift, but I could have sworn it was an official product. It works just great. After logging countless hours on Super Metroid, and other controller feels wrong. I couldn't play very well with the classic controller, but my original snes controller works just fine. I just checked the adapter, and it doesn't have any markings. It has the color scheme of the snes. Hm.
I use a third-party wireless version of the classic controller, which works great IMO. The only bad thing is that you can't use the Z button to run like you can on the Game-Cube controller.