I just went trough this myself.... long story short.. I got a first gen "real" eotech mag for 300 bucks..( local shop) and its the one that I use... Came with eotechs cantilever mount. The biggest difference I can tell is the glass quality.. it just seems more clear than the cheaper ones... I have a few from ebay... utg, etc. and to tell you the truth, they are better than expected, but basically I just couldn't leave a 50$ mag behind a 450$ sight ya know. I also got a rip off eotech flip mount.. well, a "real" eotech is bigger diameter than the fake ones I guess.. It dont work with the real magnifier. It did fit the Leapers 3x one but moves like crazy... holograph wont stay in center of glass..
all the money I spent trying to save money, I could have got the bad ass new one you want..
The one I did look at but never got to try was one made by Vortex... looks nice
sorry to turn my so called short story into a long one, just dont wanna see someone make the same mistake as I did..
I learned it from here, and its true..... Buy once.....Cry once
hope you can make out my bad grammar too.. sorry ––––––––- ( see state im from) jk
good luck