Don, While I sell all the sights listed above, my personal choice is the HHA Optimizer Ultra with the large pin guard, and 10' of fiber optic wrap.
The Rheostat pin guard allows you to adjust the pin brightness to conditions.
If the moon is out my pin lights up. I have noticed setting in a tree stand in the morning that I can see my pin way before I could ever see a deer well enough to shoot at.
I'm really not sure why a light or a brighter pin would be of any advantage.
I have 2 of these sights on my personal bows and they are easy to sight in, quick to adjust, andsuper rugged.
I'll soon have a third one!!

Dan