I myself use HHA single pin sights, and think they are great. Very bright pins plus the ability to adjust the brightness. Well built sights that can take a good amount of abuse. I have tried multiple pin sights before and have always come back to the single pin. I do practice a lot in the off season, so I am familiar with how much my arrow drops. Typicaly I set my sight @ 25yds and am good to 35 easy. As with any sight/bow/arrow set up, practice is what will make you a good shot.