I shot an EOTech for many years. Don't know model number, but it was the 2X AA battery version. I now have Sig Romeo 5. I can say that I greatly prefer the open screen format to the tube style. The EOTech for me allowed a much better two eyes open sight picture.
I can not see a red dot. I put on a primary arms 3X32 prism scope. Little bigger than red dot but not as obnoxious as a long scope. I got the one for the 5.56 reticle. The yardage drop marks are kind of useless, but I like the etched reticle it works with no power or all the way up the red bright clicks. zeroed up quickly. I use the 5X prism on all my real Ar-15 rifles. Accurate and they light up red and green