Nikon 440 Everytime.......I range obvious landmarks, and keep it on my belt at all times if I need it in a pinch.

Confidence is a big part of shooting a bow accurately let alone accurately under pressure, from heights, weird angles etc......if you know an exact yardage rather than just adding another component to worry about or make a mistake with it will help your confidence immensely.

I use mine religiously and I am a pretty serious 3D shooter who has LOTS of practice judging yardage.

I would rather know......than guess.