I want to build another self defense/tactical 870. I have already built a pretty good HD 870 but want something a little more tactical. I will eventually be purchasing a Police model 870 and only using high quality products (ie no TacStar, no pistol grip only. I know I will be adding a Surefire Forearm, a Mesa Tactical high-profile ar stock adapter, 4 or 6 shell holder, Vltor Modstock, Hogue AR grip, Single Point Sling, Vang comp saftey and shell follower, and some form of optics.
My question is about the difference between the EoTechs and the tritium/fiber optic holo sights from Meprolight and Trijicon. The Mero/Trijicons don't use batteries and have little or no moving parts. The EoTechs are battery powered but seem to be very good sights. Why do the EoTechs seem to be so popular and which of these mentioned would be best for an 18" tactical Shottie.