I have the 3 way peep on my bow and the only problem i have discovered is when im in direct sunlight (ie standing in a field) the sun hits the brown colored string (i am shooting a parker balckhawk with a black and brown bowstring) which causes a glare of sorts and it is definitey a lot harder to see the target. Its not very comforting when you come to full draw and cannot see a 3d rineheart target 35 yards away.