RE: The Freak by Priomos or Lynch Foolproof
If I were to make the choice between the 2, I'd choose the Freak. Not necessarily because of the sound, but because of the way it is used. Also, a slate type call is easier to change the tone of the call by simply changing the striker you use. Basic strikers are fairly inexpensive and easy to find and can really make a difference in the sound of the call. Remember to sand a slate type call often and only sand it in one direction and sand your striker tips as well (not to change the shape, but to keep it clean).