I just got some of these from www.selectarchery.com. They fly great, but I have a configuration problem with my Muzzy Zero Effect rest. I have it set up too high so there is a bit of contact with the fletching right now. Even with the contact, the arrows flew right on top of each other when shooting. Can't wait to get the problem solved. I have also had a pretty good experience with the Sims Stealth Vanes. Don't shoot nearly as well as the Quikspin, but they are quiet.