I've used both the Eotech and the Trijicon. I like them both in normal conditions, but the military was sold a bill of goods with the eotech. It didn't perform at extreme conditions as was guaranteed.
Trijicon because of some religious inscription on the scope if I remember right was the issue.
I'd have to go with Trijicon because of the reliability.
Never used Either but i would say Trijicon, I have a couple lower cost red dot sights and would like to try an Eotech to see if it suits me better. I bet the Trijicon would be better than an Eotech for Durability and accuracy.