The only mechanical heads I ever tried were the Rages. After fumbling around with them for a full season I only use them for turkey hunting now. I cannot tell you how many times one of the blades would fall open on me. Most of the time it was happening while stalking through tall grass but there was one time while sitting in a tree stand the blade fell open while it was sitting on my bow hanger! I have heard that they redesigned the rubber grommet which holds the blades in place soon after my experience. I just decided for me that a fixed was the piece of mind that I was looking for when big game hunting. To each's own though. Shoot what you have confidence in!