Still satisfied after 19 months of use. - Trijicon ACOG Mount RMR Adjustable Red Dot Sight w/ MOA Dot Reticle

I purchased and installed this RMR 07 in February 2015. I mounted it on an FNH FNX 45. I have used the pistol with sight in 3-gun shoots and have run about 600 rounds thru it.
one time I had an unusual occurrence of the dot going out while shooting. Fortunately the irons are there and kept me in action. At completion of the run I hit the button and it came right back on. Another time I pulled it from the holster to find the dot had gone out. That's two occasions where for unexplained reasons the dot when out. But otherwise it has always functioned properly and that's been 98 times out of a hundred so to speak.
Once mounted which is simple and straight forward using the included hardware, adjustments to put the dot over my front iron was quick and simple. The variable brightness control is a nice feature which of course permits changes in the dots brightness depending on the given amount of ambient light during the time of use.
I have not replaced the original battery since new. Sight has maintained absolute zero since initial setting. Overall this is a nice sight which barring a couple of malfunctions has performed well. After 19 months of use if I were offered my money back, or continue using the sight, I'd keep the sight. So I'm still satisfied after 19 months of use.