Getting to spend time in AZ during the winter is awesome, with all the sunshine. However, you get low sun angles in the winter, and they can really mess with red dot pistol optics. I took pictures of the RMR, Acro, SRO, Romeo 3 Max and RTS2. The RMR is bad, showing a flock of dots, the Acro has multiple dots including a translucent colored one, the SRO has two main dots, while the RTS2 and Romeo 3 Max are awesome in a low sun angle. It is important to start with a clean lens, as debris on the lens makes things a lot worse.
RMR:
Acro:
SRO:
Romeo 3 Max:
RTS2: