Aimpoint makes a BUNCH of different variations of their sights and I do want to get some personal hands on eyes looking thru time with them to see which I might want to put on my CD AR. I think and am not sure cuz I haven't tried yet that the EOTech will be faster on target and that little one MOA center dot allows for some pretty accurate aiming up to the distances at which magnification are needed.
The Bushnell versions of them do not seem as rugged as the EOTech brand and there are several versions even of it. That the military uses them as hard as they treat equipment tells me that they can be trusted but like anything any individual example might fail.
From what I've read the ACOG is supposed to be THE CLASS ACT in such sights but quite honestly they are priced out of my price range. Unless they wanted to send me one to play with I don't expect I'll ever see one mounted on a firearm of mine.
On my camo R15 it just wouldn't be cool to mount a non camo sight so I got the camo EOTech cuz I'm a real cool old fart and have to look the part don't ya know.