"A picasso IV and cvppc is nice...but the performance can be beaten with mediator..."
Performance is relative. The transfer speeds on the CV are the best the Classic has attained. The Mediator and the Prometheus are rather mediocre with only around 10MB/s. I remember the Prometheus was just marginally faster, maybe it will get faster when they finally finish the firmware update.
Graphic Blitting and 3D yeah, sure... And I guess transfer speed differences varying from 14-16Mb to 10Mb/s, you probably are more interested in getting a faster GPU on your gfx card.