I just got back from the forkesville, PA archery festival, I purchased the MX3's. Couldn't wait until tomorrow, I had to shoot them. Dead Nuts on all the way, great broadhead, they fly like a dart. I am shooting an SQ2, 6500 Carbon Impacts, 100gr. MX3 and a drop away rest. My friend stood off to the side to listen to them, they make less noise than the original muzzy, seems like a little less penetration though, but that is cause of the diamater. Two weeks to go in PA. Good luck everyone.