dude, go Seagate Barracuda IV or V. quietest hard drives ever. DO NOT get 10,000 rpm drives, their loud as hell, and if they aren't loud they have a high pitched noise to them.
go to newegg.com and get it there. you needn't spend 200 bucks on hard drives unless you want like over 200 gigs of space...which i don't think you need.
i have 80 and i still have like 60 gigs left.
i would recommend buying two 80 gig hard drives. or an 80 and a 120.
buy seagate.