I'm very happy with it, emulation of 8-16-32bit systems is very high quality. MAME, CPS2, PCengine, GB/GBA, SNES, Megadrive and C64. Amiga emulation is one of the sticking points though, the GP2X cant quite get full 100% emulation, but unless you need perfection it does a good job on ~80% of the titles Ive tried. Some things dont work no matter how I tweak settings.
Pandora is already claiming 100% Amiga emulation and it has a keyboard and touchscreen (mouse emulation).
/partial hijack off.
Umm, I don't think Winuae claims "100% Amiga Emulation", do they more mean in regards to Speed, that it can run the emulation at full speed?