I think Steve has it right. You really need to know how to use the collar correctly which is more important than which collar I would think. Used correctly they are a great training aide. Used wrong and you either get no results or a dog that is worse than when you started using it. I think if I even tried using one on my last dog, he would never leave my side. If you even got harsh with him it would be a while before he would get back into the hunt. My Lab it was not a big deal and insured my commands were followed.