I used a Keller for years, but got to where I needed a fiber optic. Went with a Trophy Ridge V drive, it was OK. This year got a new bow and tried a 3 pin fixed. Next year going back to a pendulum, probably a Vitial Bow Gear. I like them, the Trophy Ridge was a litte noisy and heavy but it worked, the Keller is very nice if you got good eyes.