If you decide to go SCSI, get 2 SCSI cards: 1 for your SCSI hard drives, and 1 for other SCSI devices like CD-ROM drives, tape drives, etcetera. It would also be advisable to replace any IDE device you have with a SCSI, USB, or firewire device if possible.
There are plenty of good SCSI host adapters (expansion cards) out there. As for devices, IMHO hard drives from IBM are the best. Plextor makes some of the best SCSI CD-ROM drives available. Another important consideration is SCSI cabling. You should not skimp on the cables or you will regret it later. There are many good brands of SCSI cables out there. I personally like Granite Digital, <http://www.scsipro.com/>. There are good reasons why SCSI is more expensive than IDE. It's faster and more reliable. SCSI has more of a "prestige" perception than IDE. Thus, better design and engineering decisions go into SCSI than into IDE. The SCSI FAQ is kind of old, but still informative. It's at <http://www.scsifaq.org/>. Whatever you decide to do, good luck, Andrew Hagen [EMAIL PROTECTED] <http://clam.rutgers.edu/~ahagen/>