I shoot a quick tune on my back up bow and a zerro effect on my primary bow. I love the zerro effect and will never switch. Its very easy to set up and tune, but is also very difficult to screw up once it is on. Once it is on, its there and tuned untill you decide to screw with it. It also very difficult for the arrow to fall off the rest. Actually impossible, unless you are shooting while standing on your head. I have had my quick tune's cable come lose causing me to have to pass up a very nice buck one year. I drew the bow and noticed my rest was not raised high enough. When I checked it out, my cable had come lose. Other than that, its a good rest as well.