the problem is still . . . forget to see MOS-PuP "fly" on BlizzPPC, period. Not enough juice.
About the AOS4-MOS on PowerUP comparision, we have to wait for AOS 4 for Classic and try to yourself.
Don't beleive at anyone experience . . . they "often" lies
EDIT- and just for clarify my opinions about MOS for PowerUP:
I've NEVER said to trow in the bin AmigaOS and use MOS instead (go figure!).
I'm only saying (since the beginning), try it, just for the sake of. (NOT the first releasse due the well known issues)
Reduce all you can (TTF fonts, antialias, heavy skin, alpha blending) and you will get an useable PPC OS (not as responsive as AmigaOS but enjoable)
I'm still using everyday on my CSPPC200Mhz with CVPPC and i'm "quite" happy.
YAM-MOS fly and even IBrowse under Trance, is fast as before.
If you have a PowerUP card and a spare little partition, try it, tweeks a little bit and enjoy, until . . .AOS4 will be gold ;-)