I have only tried MK2 which i thought ran pretty well, the only prob i find is the lack of buttons. Not enough buttons to support everybodys fatalities without constant reconfiguration anyways.
Just got my GP32 the other day and just wanted to tell you all how much I love it :D
Also, does anybody have a weired bug with the SNES emulator whereas the screen kinda divides into four corners and shows them jumbled up on the screen?