1964, zSNES... Most of them work well. I haven't tried a whole lot... MAME
works, I haven't been able to get PCSX2 work smoothly yet, but I haven't put
too much time into it.
I run zSNES DOS version. And 1964 for N64. The Saturn emulator was slow, but
it worked. I haven't tried it since I upgraded to a new CPU, though. I have
all my emulators so I don't have to hook up all my old systems, too. I
had a whole lot of them (Sega Master System, NES, Atari) that worked fine,
but reinstalled and haven't put some of them back.