Frostycanuck, the primos terminator is good but diaphragms are better yet. One thing you might consider trying to help you overcome your gag reflex is this.Drill a small hole on the outside edge of the horseshoe part of the diaphragm, on either the left or right side as placed in your mouth. Then tie somedental floss tothe diaphragm useing that hole.Make it long enough to hold the other end of the floss in your hand. When calling if you start to gag you can simply pull the diaphragm out of your mouth. Plus I have heard that the dental floss comming out of the mouth takes away from the gag reflex. There are couple of sounds you can make from a bugle tube & reed like the Primos system, but if you can learn to use a diaphragm, wellthe sounds you can make are almost unlimited with both bull and cow calls. Hope this helps.