I'm not suprised at all, and actually I would say that most double-8 cine cameras are top-grade gear combined with excellent lenses. It was basically stuff for wealthy families. It was mostly with super8 that crappy plasticky cameras and bottle-bottom lenses for the masses were introduced. I am the proud owner and regular user of a Bolex-Paillard D8 and not only all sides of the camera shout "quality", but it has a triplet of lenses by Schneider-Kreuznach that for craftmanship and building precision rival the best large format primes (perhaps at the point of overkilling, considered the limits of 8mm format).
I don't know if you ever spotted it, but there's a "cine" section here on this board; unfortunately for some reason it was implemented as a "users group" rather than a standard forum, so it's a bit awkward to use, it doesn't alert you the usual way if someone replies to one of your posts etc., so it's not as lively as the rest of the board. However, you may want to post some specific messages there.
Good luck with the electronics of your new cine cameras!