The Samsung SpinPoint F3's have been getting good reviews, as well as the WD Caviar Blacks.
I am looking at doing the WD's for my main HDD's, and then 3 x 3 RAID's with the SpinPoints.
I've been using a WD 1 TB Caviar Black in my desktop for quite some time now and am quite happy with it. Along with this drive, I have 2 Maxtor drives (I can't remember which ones but then Segate took over Maxtor anyway).
I've installed two Ultrastar A7K2000's in my video fileserver and are really happy with them.
Bought a WD Black Caviar today, plus cleaned up my startup files, accessory program bloat, etc. while I was in tech mode This drive is fast. Probably going to get another one to replace my old C: Baraccuda which seems slow in its old age. Thanks, guys.
I originally had 2 drives connected in RAID connected to look like one drive duplicated and a third for the media and everytrhing else on the first disk(s).
I found PE9 went noticable faster when I unraided the first 2 disks, Left the OS, PE9 program and disk cache on Disk 1, set all prokect files and caches on disk 2 and media on disk 3