Rocky Mtn Snypers, fly better than Spitfires, one huge entrance hole, open easier because of Cam Action blade design, Rocky Mtn Broadheads back up their products, Bruce Barrie (Owner) is sending me extra blades for the Snypers, no cost! My next vote would be the Rocky Mtn Gator XP, the Spitfires need by far some of the most KE to open for none rubberband mechanical broadheads.