So far, my only complaint is speed. If I'm scanning a fairly large picture at a fairly high DPI (dots per inch), I have to wait for several minutes for each picture. It seems like the actual scanning happens pretty quickly, but then it takes forever for it to create the file, or whatever it's doing after the scanner stops buzzing. Also, the .tif files take up a tonne of space.
On the other hand, take a look at this:
This is a scan of a very small, very old picture (around WWI). And it looks freaking amazing. The man in the back row, second from the right, is my great grandfather, Leslie Austin Angus.