Probably the most versatile call. Start out with a single reed (they often call the latex a reed even though we are talking about diaphram calls) until you get the hang of it. I usually only use a single or double anyway. As stated you can do a variety of cow calls bugles, grunts, and chuckles with them. You can also do a pretty good coyote yip and howl. Some can do a good predator call, but I've yet to master that. I have called in turkeys with my elk diaphrams as well.