CS-MKIII is undoubtedly the best but they are prone to damage due to a badly designed 68060 socket. They have a faster memory controller and an ultra-wide SCSI3 controller.
Working ones are expensive, but broken ones go quite cheap and can be repaired by Amiga Centre in France.
Same can be said about broken CSPPC cards.
Get one WITHOUT a 68060 if you can then you can get a Rev6 68060 (E41J) and overclock to 80MHz and beyond with minimum cooling.
