I recently started looking into Trijicon's RMR sights, as the new G40 release by Glock has sparked my interest. Wow are they expensive!! Do they really help that much?? Also, does anyone know the difference in MOA dot size? Obviously, the larger the number, the larger the dot. I'm assuming the obvious that the larger dots are intended more for closer range, whereas the smaller for longer range. I guess what I'm asking is does anyone know the ranges that each would typically be used for, or what they're suggested for? Also, they offer them in LED, Adjustable LED and Dual Illuminated. Does anyone know the differences? I don't see much helpful description on their website for this.