You can do a lot better if you're willing to do 10 minutes of work. From outpost.com you can get the Maxtor 61 GB IDE drive for $290 and a "PYRO 1394 Drive Kit/Firewire Enclosure" for $140. That's exactly what I did. The Sony enclosure is identical, except for color, to the Pyro enclosure. Works perfectly. I'm sure this is functionally no different from what you would be paying $600 for.
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Mike Schienle