I've used both, the F3 and (many) caviar blue drives. Personaly, I'd always go with the Caviar series (though I'd pick black over blue). My F3 died so I got a replacement - died again.. this happend with 3 drives in a row. They just werent up to the tasks I asked of them. The Caviar black is my boot and programs/games drive, and caviar blue for backup drives.