I've heard mostly good feedback on them. The only thing that has ever concerned me about them just how durable it is. I've never heard of a problem with it, but if you're hard on equipment you may want to take that into consideration. The hindsight is another thing to break, knock out of alignment, etc. But in truth, you can probably be a whole lot more accurate with the peep. The longer the distance your sight and rear aiming apparatus (hindsight, peep, etc.) are from each other the more accurate you will probably be.