Tom, Keep and eye on Bens Bargains and build your own external usb storage system for less.

For about $20 you can get a light, quiet 3.5" aluminum usb 2.0 external enclosure like this one: http://www.bensbargains.net/ktalk/11...3,93261,.shtml

Then for $60 pick up a nice big 160 gig ide drive like this one: http://www.bensbargains.net/ktalk/11...9,47014,.shtml

So for around $80 you can get 160gb of light, quiet external storage. the key is quiet, as most prebuilt external storage units have noisy fans. I've got a 160gb drive in an aluminum enclosure like the one above, and it doesn't run very hot at all...

Ben's has deals on drives all the time, you can go as big as 300gb in that same $20 enclosure if you want...