I'm looking for a bus-powered FireWire hard drive. That's easy to find. But the rest of my criteria narrow the field a bit. 5400 or higher RPM (to be used for video editing) Cheap USB 2.0 as well minimum 80GB I've found a number of hard drives that are 7200 rpm, FireWire/USB, Cheap, and ~200GB such as this one (linkety) but I don't believe it is bus powered which is a MUST. I'm going to be traveling with this drive, and so need to not be chained to an A/C outlet. Any advice on a good drive? Suggestions on which of my criteria to drop? Thanks!