Seagate is very good. I got a 160GB Maxtor DM9+ before and I thought it was really really loud. I mean the seeks were just so annoying! I used the Hitachi prog to tone it down, and its seeks were quieter but still there. Sandra results:
Buffered Read : 82 MB/s
Sequential Read : 48 MB/s
Random Read : 7 MB/s
Buffered Write : 62 MB/s
Sequential Write : 44 MB/s
Random Write : 14 MB/s
Average Access Time : 8 ms (estimated)
Now I got a Seagate 7200.7 8MB 80GB, which has inaudible seeks (once my ear is farther than 6" from the drive or when the lid is on), and I find that the idle is quieter than my 5400RPM Maxtor. Results out of the box:
Buffered Read : 83 MB/s
Sequential Read : 54 MB/s
Random Read : 8 MB/s
Buffered Write : 80 MB/s
Sequential Write : 53 MB/s
Random Write : 9 MB/s
Average Access Time : 6 ms (estimated)
So basically, after taming the Maxtor a bit, it was still louder than the Seagate, and its performance was quite a bit worse. Whereas, out of the box, the Seagate is very quiet and its performance is excellent. Five stars for the Barracuda!