I personally I would go with the Maxtor. I have had zero problems with them. The IBMs have always been great performers, but have had reliability problems in the past. I had my 30GB Deskstar die and there is a class action lawsuit against IBM for some of their drives. I would like to think that IBM has solved these problems since then, but until I am sure, I will stick with WD or Maxtor. By the way, I would go for the 8MB cache if it is available on your drive. If reliability wasn't an issue I would go with the IBMs.