I'm using a
Kodak Scan Station 100.
I think that scanning in greyscale will give me the best options. I did a few tests with greyscale and 400 dpi, and the result looks good. I'll have to remove the grey in the background (and inside the letters, time to polish my photoshop skills). The only downside is file size, but I can work on that once I have a good quality scan in place.