I owned one and was less impressed with it than you.
I bought one 2yrs ago, and had nothing but trouble out of it. Here are a few of the problems I had.
1. The dial goes out of tune while walking through the woods, then when you first try to run it, you sound like a goose, not a turkey. When trying to call a turkey, I dont want to spend 5 minutes squalking trying to tune a call.
2. I like to travel light, and its a little bigger than I like.
3. It requires too much movement when operating.
4. You cant do the cluck and purr on it, and that is my favorite finish bringing the bird in call. In fact you cant really call much at all once the bird gets close because of the movement.
5. Finally the last straw for me was it has a black rubber diaphram that controls the air flow. After practicing on it less than a week, the diaphram blew out.
That was the last straw for me, I threw it over a rock cliff and never looked back.
That being said, I still believe it is a good call to learn on if nothing else works for you. If you cant take a mouth diaphram because of the gag reflex though, I would suggest a tube call. You can do everything on it, and still have very little movement.