Terry, I have 100% faith in double bevel broadheads, and I don't want anyone reading this to think otherwise. Double bevel broadheads get it done. They sever arteries, and well, end of story.
Look, I am in no way saying that double bevels are inferior; and that isn't what this post is about. My post has only been about the
design and quality of 3 manufacturer's single-bevel broadheads; but I completely get what you're saying about the single bevel hype. Single bevels are NOT required for hunting. A zwickey delta (double bevel) is ALL a guy ever needs.
Lets put it this way Terry: a good friend of mine was out there hunting with a flint head that I made for him (until he injured his shoulder this year); and he had already killed one deer with a flint before I knew him. So there is no way I would ever tell you a double bevel head is inadequate; since even a stone point gets the job done...
I want to get this straight for anyone reading this post too: single bevel broadheads (and even steel broadheads in general) are NOT needed for hunting. You will never hear me saying otherwise.
Here is a picture of the only necessary equipment for hunting: made from all natural materials picked up by me when I lived in Indiana, atop a fox hide quiver, made from a fox harvested and tanned by myself, so don't worry Terry, if I have faith in stone points, then I've definitely got faith in your double bevels.