I've upgraded a few of my disk drives on my home computer and NAS. I have some older ones to give away. There is:
WD WDE6400 640GB. SATA 3.0 Gb/sec 7200 RPM
-------Ben325e
WD WD7500AACS 750GB SATA 3.0 Gb/sec 7200 RPM-----RayH
Hitachi hde721010sla330 SATA 3.0Gb/sec 1TB 7200 RPM...