I have Western Digital special edition drives (the 8Mb cache version) in both my Giga PCs. They are very fast according to the benchmarks I have run and I\'m easily getting 160 voices with no clicks or pops. The drives are on their own IDE channel BTW.
I\'m very happy with them. I previously used IBM Ultrastars for my DAW but I don\'t like the usage recomendations they have been including in there specs. I think it was something like 320 hours a month.
There is no doubt the WDs are currently much faster and sustain more streaming voices in Giga. I was surprised to see someone comment on that page about the IBM streaming video with fewer dropped frames, because that is NOT my experience at all. I suspect there was another factor of some kind involved.
I have probably five of the IBM drives, and three of the WD-8s. My results are consistent with all of them.