Pretty much all of them! I don't have any particular ability to easily master any "musical instrument" and that includes calls.
That's never stopped me from investing in all kinds of calls over the years and I can make some passable sounds with most of them. I am most comfortable with the diaphragm calls. I like the idea of not having to move to use them.
Like many turkey hunters, part of what I enjoy about the sport is trying new calls. To me, it's just a lot of fun to see what folks come up with to try to imitate the wild turkey calls.
"If he's out of range, it just means that he has another day and so do you."