Well George, I do not use special software to measure performance of the HDD – for me numbers are coming from ‘hdparm -tT /dev/sd?’ tests on 775 socket.
Although I prefer WD drives in this case I got for good price Seagate 2TB SATA drive (Seagates was not so reliable in comparison with WD in my practical life).
Just for notice: I run Linux server with 4 WD Blue HDDs 2TB each in RAID 5 configuration and performance on read side is around 380MB/sec.
Polar Bear