Samsung F1 750GB & 1TB Drives: Fast... and Silent?
 

Samsung F1s are the top performing 7200RPM desktop drives of the day. We put the 750G and 1TB models through their paces in SPCR's acoustics chamber to find out whether they can take the low noise crown.

http://www.silentpcreview.com/article843-page1.html

Very nice and comparatively cheap.
 

I'm waiting for the price here to go sub-$200 locally and I'll get a couple of the 1Tb version to replace the 501LJ drives in my server.