I currently have a Knight n Hale Pitboss goose call. I recently dropped it and it cracked the bell of the call.. Now i am in the market for a new one. I am wanting to get a nice call. What is the difference in sound/pitch from like an ABS, polycarbonate, Coco Bola type calls? I have been trying to do some research and can't find much. Any body have experience with any types?