Been a Zwickey fan for 45 Years; the Delta the best, for the above mentioned reasons. I like large entrance and exit holes. The only head I prefer as much, or more, is the large Snuffer. Almost always carry both in my quiver, and prefer the Snuffer in early season and when there is no snow. The Snuffer and the 4 blade Deltas are the best, IMO, if your shot is "Off the Mark";they DO leave a blood trail. Hears so much good about the Simmons that I'm going to break my habit next season and try them.