I cant see the N770 or N800 being all that great with the lack of buttons and all. Dont forget the GP2X version is fairly optimized for the GP2X, just because the N800 has a faster CPU Mhz (It doesnt always mean it's faster, I dont know for sure if it is or not) it doesnt mean a quick port of an PSX Emu is instantly going to produce playability. I doubt it'll be any better than the GP2X version and never anywhere near the PSP. Personally I have a GP2X so have no real interest in emulation on my N770.