I have a Plustek OpticFilm 7600i. It's not SANE-supported, but I
read on list a while back that if whoever is doing any Plustek
development had one, they'd be open to adding support. I'd be glad
to lend mine out if anyone is interested.
(I looked at the genesys source code, considering adding the support
myself, but I don't know a thing about how scanners do their thing
or even much about USB interfaces. I'll leave it to the experts if
any of them are interested.)