I have a 1TB Hitachi Deskstar boot/OS drive, 1TB WD Black games drive, and a 1TB Seagate 7200.12 storage/backup drive. (the WD is SATA3 the rest are SATA2) I had to change the WD to a games drive due to chipset issues with SATA3. This happened to have been what was the "Big 3" of HDD manufacturers (barring Samsung) at the time. This was just as a little experiment to see which company's drive will last me the longest. (although it's a little unfair to the Hitachi)