While reading up on the Early 2008 Mac Pro before mine shipped, Macworld wrote that "The eight-core 2.8GHz system lagged in some of our tests, results we attribute to its somewhat sluggish Seagate hard drive." referring to the OEM 320GB. When my 2008 Mac Pro arrived I was happy to see it's a Western Digital instead. (always preferred them over seagate... far quieter) I also understand that if you order the 1TB option, it's a Hitachi. It seems like Apple is going with nearly every company out there for hard drives. This poll is just to see what you folks have gotten in yours.