I used to hunt with a peep, but recently I switched to a kisser button. The only problem I have with the kisser button is that I cannot feel it in the corner of my mouth when I am hunting with my facemask on. A facemask with a mouth opening fixes that problem. I had a lot of problems with the tube on my peep breaking, and I couldn't see as well through the peep in the early mornings and evenings when it was just starting to get light. I don't think you can really go wrong by picking one over the other. They both do the same thing--help you keep a constant anchor point.