I haven't used them, but have looked at them. My opinion is that when and if I change from my InnerLoc's I might give them a try. One of the things I like is how the blades lock into the ferrule---very stout.

I will comment about how they or any other broadhead flies. None will fly like field points because they are not field points. However, it's possible to get them to hit the same POI as broadheads and group even better. It depends on how much time and effort you take to align ferrules to your shafts, the straightness of those shafts, and tune the bow/arrow combination.

Arrow spine is one of the most overlooked issues and this comes down to tuning. So the very most overlooked tool for helping with spine is the limb bolts on the bow. Evrybody thinks they have to shoot the bow maxed out and don't want to change the bow weight when sometimes a half turn or a turn up or down with the limbs can makes arrows fly like darts. That's partly how I tune mine and where the bow's weight falls is where it stays.