RE: Sound and vibration elemenation? Also quivers?
It really depends on the quiver. There are some great ones and some crappy/noisy ones.
I have a 2 piece Hoyt quiver on my Trykon XL and it is as quiet on as when it is off the bow.
One thing you may look into is ensuring the quiver has arrows in it when you are shooting. On some designed the internal foam inserts will rattle when there are no arrows in the quiver.