I just bought the new Rattle pack from Knight and Hale. Haven't had the opportunity to use it quite yet but practicing with it at home, it sounds just like the real deal!! I would have never guessed. I'm a sucker for a new gadget or gimic every year. My wife just shakes her head and rolls her eyes at me LOL!!! Anyways, can't wait to give it a whirl out in the deer woods.