Thinking of going to a moveable sight. Looking for a round aperture, single pin, fiber optic, sliding sight. Like Tru-Glo, Cobra, HHA, Impact Cosmic. I am sort of a quiet fanatic. I shoot a Mathews Ultra 2, 28" , 60#. Are these sights as quiet as a simple fixed sights? Assume shooting with the thumb screw tight.

thanks for the insight,

Dayton