It reads a bit like you are narrowing down the options so that a Raptor is the obvious choice: no budget, limited amount of space required/available, fast - only remaining downside of it being thought of as comparatively noisy since the expense is taken out the equation.
If money was an issue then a WD 250gb AAKS would probably be my preference or a Seagate 250gb 7200.10 such as I have just now, both drives are very quick, offer a lot of space and are fairly cheap for what they offer, not to mention mine is inaudible for me.