I'll second the HHA Optimizer, if you don't mind a one pin sight. I just got the Optimizer 5500 on my bow, which is the one with the rheostat that allows me to adjust the amount of exposed fiber-optic cable and thus the brightness of the pin. It has 5 ft of fiber-optic cable, so it is very bright. The pin is also smaller than most sights I've looked at. The sight is also among the best constructed on the single-pins I looked at, which is why I picked it.

Mike