Are you sure the fuzziness you see on Eotech's is not caused by your eyes, as you mentioned above? My Eotech reticle does look a bit fuzzy I think. I'll have to check my Holosun because I think it's about the same, but maybe not. All my simple dot red dots look like weird blobs. It's my eyes that cause it as when I take a photo or look through a camera at the reticles they are crystal clear. Now you have been wondering if the Eotech is my eyes or the optic itself...gonna go check.
I still like my Eotech 512 I've had for over a decade though. I don't know what the battery life would be if I left it on all the time, probably not good, but just turning it on when in use and then off when put away the battery life has been pretty darn good. Like two battery changes in 11 years.