I have used them for many years now without fail. I have never had a single vane warp or tear off and my arrows are very quiet in this rest. There are no moving parts to fail and no strings, springs, etc. to break or malfunction. I love the simplicity of the rest. I believe that in archery hunting it is important to keep it simple. I have used them on several different bows and had good results with all. In my opinion, if you cant get this rest to group extremely tight there is definitely something wrong with your set-up or form. To each his own, but I will stick with what works for me.