Did a search but only a few mentions. I have been using slate/glass/ aluminum pot calls in my spring arsenal. Heard a copper pot call on a video and was impressed. Thinking of getting one. For those of you that use one, how does it compare with other materials and what type of strikers are working for you? I know it is very much a trial/error thing, and personal, but just want some feedback on this type of call. I will probably get one anyway, you can't have enough calls though I usually only take three with me.