There are other things to consider when purchasing drives from manufacturers such as WD and IOMEGA, often its not easy to get the drive OUT of the enclosure they provide. Its probably a better bet to buy a decent enclosure and fill it yourself with a drive you know you can rely on.
As an aside ive benn waiting for NAS boxes to come down in price (right now they are stupidly expensive and for no real reason i can fathom other than supply/demand stuff) I have had a USB2 WD drive attached to a windows XP box on the house machine downstairs and then shared across the network, AND used this to play samples across an 802.11g network without much problem when using ableton. obviously long samples are a bit much for it, but prevewing and then saving self contained worked very well indeed. Im waiting for a decent 802.11n series and a decent NAS box, i was considering an ICY BOX or a Buffalo...
Anyone got other experiences of this??