Memory Card Backup

[bootybandy]

I have just purchased a great little book by Scott Kelby called (aptly) The Digital Photography Book. In it he goes on about backing up your memory cards to a portable Hard Drive. He mentions two devices. The Epson P-2000 and the P-4000.(with screen) I have tried searching on the web for these models but cannot locate them. Has anyone used them, or knows where they can be bought from. I would particularly like the P-4000 with the screen. Does anyone use a different device to these two, and what do you think is the better model. Thanks......(again). :-)