I have two 30 gig-drives, Toshiba ('3012 GAP' I think) and IBM ('DJSA-230'); they work perfectly together.
It looks like the Toshiba is a little bit more sensitive to low temperatures...last winter I sometimes had to boot twice after I left the empeg in the car over night. No big deal though.

Dr. Pupvogel
mk2 #080000169