My primary machine has a 40GB IDE Western Digital 7200Rpm 400BB hard drive in it, which is pretty good drive from my experience. For christmas from my uncle, though, I got a Adaptec 3960 Ultra3 SCSI controller (160MBps) and 2 Seagate Barracuda ST34573LW SCSI Hard Drives (7200rpm, 4.55GB). Should I use one of these in the system as the boot drive, and if I do, will it be faster than the WD IDE drive? Thanks for your comments. I also got from him a SCSI Quantum Viking 4550MB SCSI Hard Drive, VK45W472. Is this better than the seagate drives? Sorry for the long post, but I'm a SCSI Newbie, big time.