A brief history... I put some AmerGlo Operator NS on my old Gen3 G19, and after my experience with the company I have nothing but praise for them. The fit and finish were excellent, installation was no issue (as with most Glock sights), the sight picture was great in both day and night, and most of all the Ameriglo customer service was awesome. Last year I picked up a Gen4 G19 and after deciding it would become my new daily carry I opted to go with a set of XS Bigdots on it. They too have been great for their intended purpose and are extremely quick when used in a SD/carry role. However, having sold my Gen3 G19 in favor of the shorter frame Gen4 I now find that I don't enjoy "plinking" and target shooting as much because the Bigdots are not as accurate [for me] at ranges beyond 10-12 yards. So here I am, getting ready to purchase another Gen4 G19 to use as a "range" shooter, and need to get some sights for it. I think I've read every thread and post on GT that mentions the I-Dots, as well as on several other forums, and have yet to find a negative opinion or someone who has them and doesn't like them. At this point I am about 95% sure I want to go with I-Dot Pros, but I guess I am just looking for a few more opinions from those who have first-hand experience shooting with them. To me it seems like a great compromise between fast target aquisition while still maintaining the ability to shoot out to further distances. The 2 dot tritium sighting system and Hack front sight would also hold some commonality with the Bigdots I intend on keeping on my carry G19. I've never used a "U" shaped rear notch sight, but as I understand it serves to eliminate all of the unecessary "hard angles" that can distract your eye from proper sight alignment, which makes sense now that I think about it. Although I did read one person's opinion on the matter, I'm also wondering if it's everyone's experience that the higher sights are still hitting Point of Aim? Any issues with the orange paint of the Hack front fading or erroding from cleaners and solvents? Any other experiencese, opinions, pictures, useful information, etc... would be greatly appreciated. Thanks in advance and I look forward to hearing from some of you expert AmeriGlo aficionados out there.