SCSI is great.. I run my OS on a 36 gig Quantum Atlas 10k for my operating system, but for storage and divx movies and mp3s and everything else Im still using ID. at $300 for 200+ gig harddisk starting price (brand new item which will probably get cheaper as newer and bigger and faster disks come out) it is still a great deal where extreme performance is really just a luxury.
None of my 4 IDE Disks have gone bad, 3 years and over 2000 movies later