Tested VICE just for fun on my A4000TE 060 128mb ram and CVPCC plus a Repulse Soundcard.
First impression, it is very compatible, any Game worked without problems on the C64 and Plus4 Emulator. But it is really slow on 68k, 2-5 FPS maximum here
If it would run as fast as MAgic64 it would be a cool Emulator, but this will never happen, so this Emulator is for High Powered PPC or PC's only. Can't wait until I got a PPC Amiga myself, the Vice would be fine