I use NESoid to play:
Mario
Krion Conquest
Felix the Cat
Kirby's Adventure

all of those work fine, with a less than occasional audio stutter.
as for the input settings:
im using up, down, left, right with the Dpad
the A-button is J and the B-button is H
return/enter is my start and delete/backspace is my select

I played fpse it's a psx emulator and it worked pretty well, I was playing final fantasy 8 on that emulator, the downpoint was that the screen is a little bit too small for that... gameboid works perfectly

Sent from my MotoMB511 using XDA App

snes9x play smoothly!