ORIGINAL: davidmil
the hind site is a much shorter sight plane between the two aiming points, front and back site. There is NO WAY it can be anywhere nearly as accurate as a regular peep. To think of the hindsite. Would you take your front site on a rifle and move it back to 5 or 6 inches from the rear. Exactly, it's a gimmick. Get a bigger peep, ream out the old one or don't use one at all would be better than a hindsite.
The problem with most peeps though, is people ream them out to big and when you have a 1/4 inch hole inches from your face, you're really not that accurate at all. I don't know the math at all for that, but i'm sure someone could tell you :P
Shoot whatever you feel comfortable shooting. And if you can hit a good group, why change.