ZSNES (W150) But don't take my word for it cos I'm a little biased. It was the first emulator I ever used so I got sentimental attachment to it. :bouncy:
ZSNES is the most compatible SNES emulator from what I'm hearing, but you should really try out at least both ZSNES and SNES9x before asking questions like "what's the best" and generalizing everything to eliminate the other emulators in purpose.
To the people mentioning Windows or other platform emulators, he's apparently using the DS (in the DS forum, and talking about emulators that have "ds" in their titles. As far as emulators go, not sure though from reviews the type of cart used can affect performance.
But no, seriously, for a second there, I was wondering wtf this was under DS Emulation...it's like, does this guy even know what he's trying to emulate?