I build about 2 computers per month. I only use IBM Deskstar drives (with the occasional Maxtor because they're cheap). My 12GB empeg came with an IBM Travelstar and it worked like a charm. My 60GB Rio came with Fujitsu drives. The Fujitsu drives seem to have cold weather problems. I have replaced them with Travelstars and all is well again. For SCSI I use Seagate (Cheetah in particular).