isn't fastest SCSI up to like 160mb/sec and 15,000 rpm? I have IDE RAID, but heck I think i'd have to go with the SCSI here.
Course the IDE RAID would be about 1/30th the price, like $350 for 90 gigs Deskstar RAID and card vs $3000 for 160mb/sec 15,000 rpm 90gig with controller.