So I am researching which HDD I want to put into my unibody macbook. I've pretty much narrowed it down to the WD 320gb 7200 drive, or the Hitachi 500gb 7200 drive. Also possibly considering a Seagate 320/7200 drive. I'm really leaning towards Hitachi, hence the thread title. My main concerns are: Quiet/no crazy vibrations Reliability Not too hot Low power consumption. Am I good with the Hitachi? Or should I be focusing on one of the others? Are my expectations too high for a 7200 drive? Or should I stick with a WD blue 5400 drive? Thanks!