Summary: The software is very poor - unintelligible interface, slow, bloated. I've been using the WIA driver instead of the TWAIN so I don't have to use it. It's difficult to get to work, and I know what I'm doing. Once it's running, it's good. Quite fast.
Summary: I have returned two of these scanners. Although it copes perfectly with light coloured images, it can't cope with dark images. Both scanners I've been sent have created parrallel white lines down the dark areas of my images. The manufacturers say that this is due dirt inside the casing.