I've used both. there is a learning curve with the no-peep, I found that I had to learn how to look at it and see my pin at the same time. It took me awhile to get this down. I found the thing to be accurate once I learned how to do it

the hindsight was easier for me to use as it sets up right in front of the pins. I found this easier to use while hunting. I also found it accurate. Sometimes the target's range dictates that the pin and the crosshairs are on the target at the same time. When this happens the sight picture gets a bit cluttered but not enough to stop me from getting three deer with it...