The question woud be what is the life of either procedure before the replacement wears out. How long will a dog be able to hunt with either one of the procedures done? Dogs put on a lt more miles than their owners while hunting, many more. Replqacements in humans have a time frame to be useful, they do not last forever in humans, let alone a big running hunting dog. I am glad I don't have to make that decision, I would probably get a new pup and keep the other dog as a house pet and not hunt it.