I have one on my Cardiac. I really like it. 2 nights a week I shoot inside and the lighting is ok. My buddy has a the sight on his packaged bow. Heboughta light Friday evening so he could see his pins. He commented on being able to see mine from 6 feet behind me. As far as the tool less part is is nice to be able to make an adjustment on the fly without digging out an allen wrench. For the money I would buy it again.