I see I'm not the only one who has a noisy Hitachi drive. The annoying clicking during read/write is quite annoying. Plus it's not noticeably faster than any of the other drives I've used. Winning in theoretical benchmarks doesn't mean much IMO.My Hitachi drive is easily the noisiest thing in my case - I'm wishing I'd spent a couple of quid more and got a Samsung.
I'd say go with either a samsung or maxtor drive. Both are almost silent and fast enough.
As far as extra CPU cache goes, I don't think it's worth the extra cash ( ). Clock speed is king, so get the 3800+ and try some o/cing.