I purchasedthe Hind Sight Extreme in the spring and put it on my bow. I love this sight. I will not go back to a peep again. My groups have tightened up and I am more consistant. I use it with a single pin so I don't have to worry about lining up the wrong pin. I like the way rear aparature glows for low light conditions making it easier to see your front pin. It is a bit if a pain to get set up, but once you have it adjusted to where you want it I think you will be real happy with it. If you have any problems setting it up or any questions just contact them and you willget a prompt response.Here's their web site www.hindsightco.com
Good luck!

Konk