I like the ASCII controller because it didn't reinvent the wheel. They took the original SNES controller's design (which is already cool) and added turbo. As long as I'm playing SNES, I'm using that pad. That goes for the remainder of my life.

Is it the best ever? I think that award goes to the small Sega Saturn controller. It feels perfect when it's in my hands. Of course, I think people with bigger hands would probably prefer something else.