I think the prong collar (pinch as you refer to it) is for larger, stronger dogs. It worked beautifully on Honey when Helen was training her. I also have used the chain correction collars on both of my dogs as well, but with long hair like my Goldens have, they are not as effective. The nice thing is that now that they are a little older and calmer (and mind me better), I don't have to use either anymore when I walk them. Sometimes with Honey, if we're going somewhere that frightens her (like to the vet or kennel), I put on her correction chain just to ensure that she doesn't slip out of the regular collar.