Just put a Vital Bow Gear Camelback Pendulum on my Guardian, haven't had a chance to shoot it yet, been too busy and too cold. I used a Keller for years and it was a good sight, the went to a TrophyRidge because of my aging eyes I needed a fiber optic sight. It was OK, to big and it was the V-drive which I didn't really need. This year I went with a fixed pin, but was always whishing I had a pendulum. So after seeing a Vital Bow Gear fixed sight in a shop, I really liked their pins, I ordered a Camelback. Very bright pin, but not too bright, simple design, seems quiet by tapping on it. Will do a review after I get some pics and shooting time.