I’ve got a RMR on a Glock with several thousand rounds through it. Never had any need to change/tighten screws. Replaced the battery twice which involves removal and a re-zero. I’d say as long as you loctite, properly torque, and witness mark the screws you’ll be fine. If the optic goes down...
I’m sure lots of Sig optics have been used and are fine, but I’m not a fan. Bought one brand new and it didn’t work. Got my money back on that one. Had another and the Sig logo on the front top fell off right after taking it out of the box. I like Vortex for a little more money. Their warranty...
Well, guess it’s no more AC in the house lol
For real, all of them will fog. It’s the nature of the beast. CatCrap will help avoid it. Try shooting in the rain with it. You’ll get a nice scattered dot haha I’ve done it a few times. Definitely worth trying shooting in the rain for yourself if...
I'm partial to Vortex. I've had several and had zero issues. Can't beat their warranty either.
I did buy a Romeo5 for my dad last year. It was $99 at that time. I wouldn't pay $250 for it. It isn't that special IMO.
Lots of options out there. Dawson Precision, Trijicon, TruGlo, Night Fision, and Ameriglo are all reputable companies. I’ve owned various sets from each company and all are great. Each company has an intuitive selection process for on their websites the sights you are looking for.