I need a 2.5" drive to go into this - http://www.shop4usb.co.uk/oscommerce-2.2ms2/catalog/product_info.php?cPath=30&products_id=97 I personally like Seagate, but their Momentus range is undergoing a transition to .3 status. So I'd like some recommendations please. I intend to use it as a backup/portable hdd/general spare. So Jack of all trades. One thing though, I intend to power it purely via USB. Nothing else. So only drives that are easily usb driven power wise please.