I got my first pistol optic a few months ago. I bought a new Glock MOS model and the Holosun fit it with no adapter plate. I agree that this is a much better option.
I went with a green dot instead of red. I had always heard green is easier to se and it worked for me. I have to admit that this may be my expectation causing a confirmation bias though. The reticle is switchable between a dot, a circle, or a circle in a dot. I generally leave it in the circle but the dot in circle also works well. Both resulted in my groups tightening up noticeably.
I also chose one option you did not mention. Mine is not truly battery operated. I am not sure if it is a capacitor or a battery, but it has a photocell on it so that it never needs new batteries. It is supposed to be good for 2000 hours with a full charge and every time you use it the charge tops off. With the right holster design, the photocell gets charged if you are carrying it openly or letting it sit under a light when you are not wearing it.