Gary,

Simple reason: I can't get a good enough pairing for stitching from my V700 when scanning 7x17.

So, I figured that if I'm going to get a scan done, it might as well be on a decent machine.

I've got some (somewhat hard to believe) prices of under $30 for a DRUM scan of one of these sheets from a couple of sources, so I thought that I might give it a crack.

I dig Prism; before I moved to the other side of the city, I used these guys pretty much exclusively.