I have been using an Eotech 552.A65 for nine years, I have never had problems with them except at night I see double through the PVS 14 and a distorted dot. This year the batteries would die every day because I never remember to turn the unit off after hunting and the sight would not stay zeroed. I was planning to send it back for repairs but found out 1. the government sued Eotech for misrepresenting their product by not disclosing that heat will change the zero and 2. they have to give you your money if you send it back for a refund. I like Eotech, but with old eyes the Holographic sight will let you know if you are getting an astigmatism, which I might be getting. The Trijicon uses a red dot that for the most part is parallax free and by all tests seems to be a great sight. Has anyone here used the MRO and have you mounted it with a PVS 14?