I had started a thread about this in the other forum Portable Storage Devices . . .
After looking over many of the available units out there for backing up your cards I went with the Epson P-3000. I intend to write a review about it soon. So far, I find it to be everything I wanted. Upon receiving it the battery was very low as it had not been charged yet. With the low battery I was able to get my self familiar with it, transferred 2GB of images to it (rather quickly too) and viewed the images over and over checking out all the features and functions. The battery with it's low charge held up well. I later charged the battery (3 hours) and have been using it on and off again and the battery is still at full indicator. I don't see battery life being a problem at all. The screen is amazing. Very sharp.
For me, it wa a choice between this, the Digital Foci, and the Wolverine unit but the Epson had the better screen, Adobe color space support, and full RAW functionality.
Also had a 50.00 rebate from Epson good if oredered by June, 30th.