WD VelociRaptor WD5000HHTZ 500GB 3.5in 10K rpm SATA Hard Drive
fast and reliable
these raptor drives are very fast, almost as fast as SSD, but more reliabe than SSDs!
WD VelociRaptor WD3000BLFS 300GB 10K RPM 16MB SATA 2.5” Hard Drive
very good drive for being used
almost as fast a an SSD, but less chance of problems