I haven't sat down and done a careful comparison of the optical mono pulled off of the 16mm PG films, and Belbucus'. Although I did listen to the latter. One thing though that I have learned from experience, is that it is generally easier to work with digitized optical audio, than to work with digitized audio from a VHS tape. The sort of degradation that happens on mag tape is tough to work around. Overall, I agree with Zombie's characterization of the optical audio on the PG, but I still like the sound - it has a nice natural-sounding EQ and great clarity. You can hear all the effects clearly and nothing sounds buried.