CMore’s history is more of competition while the others are more EDC. I’ve played with red dots since the original Aimpoint 1000 didn’t like them because of my astigmatism. Now that that’s been fixed , I’m love’n them more. Vortex and Holosun are two pretty good ones. They make both small size for EDC and slightly larger for Competition. I have a simple Vortex red dot on my rifles because there’s never a problem finding the dot. With the pistols I’ve come to love the Holosun Comp which has a selectable reticle. Large circle and small circle, each with or without the center dot. Or just the dot by itself. Red or green. While not a fan of the Chinese, I’ll say this for them, most bend over backwards to provide customer service. Lost a part of my Vortex rail mount and they had me a whole new mount within 3days.
Side Notes:
Some CMores, and others, strictly for competition, have lousy battery life. Many competitors just put in new batteries each match. I chuckle at them turning their dots on and off at each stage. Those , like Holosun and Vortex, are of the EDC world where shake-on and battery life are paramount. I don’t even check any more except the first stage.
I think the US consumer is at a point with China now, that the post WWII generations were with Japanese products in the ‘60s. Slightly different circumstances.