Who said the new Seagate drives were silent?
I've just got one (80 GB SATA) and compared to my WD it rattles like a rock in an old tin can.
Now I've got to investigate more rubber mountings.
Fast as fuck though, and even without a disk cooler it is almost as cool as the WD. Proper cooling coming when I add 2 case fans immediately in front of the drive, which will be as soon as I've wired them to a molex.