Not understanding the good reviews - Holosun HS510C 1x0.91-1.2in Open Reflex Red Dot Sight

I received this red dot and it's going to be returned. This isn't a good design. First, as another reviewer noted, the automatic brightness feature on this optic does not work well due to where the solar panel is placed. Since it's recessed and hidden behind the hood, it doesn't get a good reading on the ambient light and thus your dot is almost always too dim. My Holosun pistol red dots don't have this problem because the panel is located on the hood itself, not hidden behind it. Second, these optics work like a projector, meaning there's a light that's cast onto the screen in front of you. For this optic not being enclosed, that means if any rain or dirt/mud goes over that light, you don't have a red dot on which to see. That means a failed optic and you're in trouble.

There are some neat features to the Holosuns, but this one has a couple big drawbacks for me, and thus I will wait for the enclosed version, hoping both issues are resolved there.