Mini USB HD for backup
 

I'm looking into getting a USB 2 device for backing up my laptop and home PC. Does anyone have any recommendations for USB 2 powered devices? I've looked at the big Maxtor OneTouches but they seem heavy and bulky.

Can anyone recommend a small device with large capacity? Or is there such a premium over these that I should stick to something like the OneTouch?

cheers,

Greg