To preface this, I own many Sig Rifles. I have a Sig 556R Gen 2, an MPX carbine, and two MPX pistols (8" and 4.5" barrels). So I do love their guns.
However, I have been burned many times with their older accessories, so I don't trust the new optic line they have come out with. The old red dots that came with the 556 series rifles were horrible cheap optics that all died on me after a dozen range sessions.
With the new Romeo series, they are still Chinese made optics, have no aftermarket mounts for them, and are priced only $100-150 less than a Trijicon MRO or Aimpoint PRO. Sig also introduced scopes, as well as a thermal sight in the last year and I don't see any federal or state and local agencies using them.
For those that have them, what made you pick a Sig optic over a battle proven brand? Is it just price? Sig's warrant on red dots is only 5 years, and lifetime on non electric optics, so that is in line with Aimpoints.
I want to like the new optic line, but won't trust them until I can see them take a beating or see how they hold up over a few years from people that have one.