I have a Primos slate and a Lohman. Both work and sound great, one is no better than the other. The Lohman glass call is higher pitched and louder, the Primos lower pitch and more quiet, and I can produce different sounds using the different strikers on each. I dont believe there is any one better than the other, nor any one company better than the other. All a matter of personal preference, but overall it doesn't matter what we think, only what the birds think.