The Trijicon RMR seems to be considered the most durable of the Miniature Red Dot Sights (MRDS) followed by the Leupold Deltapoint.
Can’t say for sure about the mounting pattern of the ProPoint (who makes that?) but it is unlikely that it will match the RMR.
I personally find the Dot on the RMR to be the clearest and the triangle on the Deltapoint just seems too large.
The Dokter, J-Point, Fastfire II, all seem to bloom more and not be a nice crisp round dot.
But that’s my (old fart) eyes, and everyone needs to evaluate what works best for them.
I have a C-more STS and love it! I’m actually parting mine out as it took so long to build I started shooting something else in competition. It is sweet though