I Play most of my games with the SNES controller... NES, SNES, heck, even some PS games.
Dual shock would win me over if not for the lousy D-Pad.
And, yes, the SNES shoulder buttons do tend to break. I've run across at least 5 or 6 with a broken shoulder button. If yours are still intact after years of use, perhaps you aren't GAMING to dee MAX!!, errr, or something.