If it was a choice between a fiber-optic glowing bead and no bead I would go with no bead on the barrel. The last thing you want is to be seeing the bead at the end of the shotgun, you want to be focusing entirely on the target that is flying and not the bead. If you are trying to line up a bead to your shot you will usually miss because you are not really seeing the bird or other moving target. Now if you are shooting at a stationary target, by all means use sights or bright fuzzy beads. Almost all my shotguns sport a Bradley White Front bead, not obtrusive, but subconsciously you know it's there without it dominating your vision. The rest have a plain simple brass bead.