I haven't been able to decide which hard drive to get... been looking at the WD Raptor 150GB, and from the reviews some people say it's fast, others say it's just about the same as a perpendicular. Anyways, my goal is to partition one of the hard drives to install linux, vista, and solaris on it. Then have the other hard drive only for xp. Also, would any of the raid configs favor in a way here? Plus, one of the hdds would be the one in my sig.