Ya you don't want small hard drives. I would recommend larger drives rather than small drives as for the most part they are faster. I used to use two 250 gig drives. They I decided to just go for my WD 640gig and that's about a good amount of space for games and the operating system. Im planning on getting another 640gb drive for all the other crap I have laying around, and if I run out of space on those two monsters, then theres something wrong with me. I never filled up even a single 250gb drive, but I want to run RAID so I want matched drives. That's another thing to think about. You can use a single drive that is larger, or go with 2 larger drives and run them in a RAID configuration.