I think alot of it has to do with personal preference, as well as performance. Acrylic and Wood calls will have a little different tone than the poly's. Acrylic having sharper, crisp notes, durability, and like Quackwacker said a lot of time and money go into making these calls. Same for wood calls, but they have a mellower sound, and can be very pretty. Will they make you a better caller? NO. Some people think by buying an expensive call will it make them a better caller; not true, they blow just like every other call out there and require you to get the job done of making it sound right. I have acrylic, wood, and poly calls, and as much as I like acrylic and wood, I still use poly calls sometimes in the field. :salude: