RE: hind sight users
I dont have one either but I have heard good things. My freinds dad installed one to get rid of his on-string peep and ended up correcting a otherwise undetectable torqing problem he had. After using it for about a year, he reinstalled his on-string peep and discovered another torqing problem. He now has both peep sights. He is satisfied with his set up, but he hunts exclusively from a treestand, so his system might not work for you. Im a beliver of his set up though, he is the only person to I have ever seen shoot a two inch group at fourty yards.