If the difference is $40, go for 060 card. (if you have the money of course.)
I have a ppc card with 040, and one of the big bandwith robber is the slow 040 and the ide port which is not using dma mode, so all the data which i copied heavily use the 040 cpu. So that's why i will change to scsi.
Anyway i think if you have good luck (or shark ppc will ever see the sunlight) you can buy a ppc card a little bit higher price. It is Worth it. Ah and don't forget os4, it will run only ppc.
