To me, the ones like aeroslinger shows are more of a hinderance than a help. I tried that exact one at one time. The little glow fibers are bright enough to dominate your field of vision. To me the glow/haze effect it creates makes the pins and surrounding peep fuzzy. Since I got old and have shot enough deer to make anyone happy I've come to one conclusion that works for me. IF I can't see through my peep....and ... IF I'm having a hard time with pins... it's probably past legal shooting time. Even if it's not, I figure at best I'm going to chance a marginal hit so why take the shot. There are other days. I practice in light a lot darker than I hunt. I've found for me there must be something coming into play that makes me NOT see the whole peep. My groups in poor light will still group, but they move away from the spot, especially when shooting on something without a spot....like a McKenzie deer target.