In this sport of archery there is lots of money waisted but if it wasn't would we get the opinions from other fellow archers out there. As far as the STS goes, for me it is a great addition to my bow. Did I need it tomake my bow quieter, not really, but the little extra doesn't hurt. The biggest plus to it for me is the vibration and shock is non existent with this thing on. I shoot good either way with it on or off but do see slightly better grouping with it on. If you are interested in it, try it, don't buy or not buy because someone told you too. Make your own assesment of each and every product you want or may want, each one may perform differently for each individual that is why we have the choice to like or dislike a certain something and leave our feedback for others to ponder on. I for one will try something if I want too whether someone tells me to or not, it is my choice and I will tell you what I think of it after doing so.