If you’re meaning the below type rather than an Ultradot, there’s (in order of price): Bushnell, Primary Arms, Sig Romeo 5, Vortex SPARC AR, SPARC II, and a few Holosun models I am unfamiliar with.
The Bushnell sells for ~ $50 when on sale- get the low mount version for a shotgun, the PAs run about $100-$150 but I’ve yet to try one, Sig is $110 on sale, SPARC AR $120 on sale, S II is $125 on sale. Best of my recollection prices I saw this weekend when contemplating an Eotech.
I think if the choices, my experience is Vortex works fine, if a bit pricey and Sig is the hot ticket at present. Some of the above are motion activated with a sleep timer to protect against dead batteries and might be just what you’re looking for rather than a rotary knob and extra movement when being eyed by a bird. In your case I think that feature ought to bump something to the head of the pack.
Had this one for awhile on a 10/22 TD and currently my U22 Neos.
Second from left SPARC, far right StrikeFire, front row SPARC AR.