The Sig comparable is, IMO, way too expensive, compared to the EOTech line. I've watched a few YT comparisons and while the Sig optic IS stout, the optic was reviewed as "on-par" with EOTech.
I considered going the Sig route, but the cost was just way off the charts for me when I can get EOTech holographics at a healthy discount through ExpertVoice (military vet).