We put all of our film on glass plates for the stability. We currently don't have a film-only option, because the success/quality for getting good holograms has not been as good.

Our film plates are pretty competitive when you consider you never need to buy, mix, or bother with chemicals and the whole wet process.

It's pretty sweet to just expose the holograms, and then view them immediately. Maybe get a box of the plates and test them out to see the difference.