I often hear people scoff at SCSI as too much power for home use. I've had SCSI systems for the past 5 years or so, and I'd have to say the main benefit that I find is load times, especially for games. This is not just a consequence of SCSI itself, but also because SCSI drives can be much faster.
I have also found a few secondary benefits:
>> ease in adding new components to the SCSI subsystem-- I have 3 drives, a tape backup, a CD-ROM, and a scanner; I've got room for another half-dozen
>> smoother multi-process operation-- lots of disk activity doesn't bog the system down
Having said that, those fast drives and subsystem will cost you. A top-of-the-line SCSI adapter will cost ~$300, and a 36GB drive at 7200 rpm will cost you ~$500. Compare this to ATA where no adapter is needed, and you can get an 80GB 7200 rpm IDE drive for less than $300!
So even though SCSI has gotten faster and better, so has IDE. It's just that IDE prices also got better much faster: $3.5/GB IDE vs $13/GB SCSI in the example above.
Thus I'd recommend SCSI only if you intend to be a super power user, not just a power user. It will be easier to add more drives or other components, and you'll appreciate the snappy load times. Your system won't bog down as easily if you try to do something like webhosting or gamehosting on your DSL. Otherwise, save your extra $500 and buy a GeForce3 card and a few games instead. (Doesn't everybody play Quake Arena?)
--dv
<font color=purple><b><i>Yellow Elf needs food -- badly!</i></b></font color=purple>