I took a gander at storage review, and decided that the Maxtor 10k3 would be a better choice for me (a user), than the Seagate 10k6. Now all I have to do, is wait for the Maxtor 10k4, and see if it's worth it, or if it'll at least drive the price down on the 10k3
One thing is clear though, the 160 controller is about to become a requirement, even for a single drive, since the latest drives are about to hit a transfer rate of 80 MB/s, the limit for the previous SCSI spec.
I know Adaptec too well to even consider using something else...