Good Experience
When I bought my first XD-9/sub, the gun dealer asked if I wanted night sights and so I said "sure" and he suggested them. I was pretty new into gunnin' and so didn't know much about such stuff at the time.
His point was they were just as good as ...whatever... and cost less.
But now that I've actually owned Heine and Novak on other guns, the Mepros are NOT as good. The others seem larger and brighter, mostly, and I do prefer them.
That being said, that original set is still on my XD and they still do glow. No longer an issue though, as the XD is now 'retired' from active carry duty, and rides in the SUV 24/7 as the "truck gun."
I have Heines on the Kahr P-9 that replaced it and they are outstanding.
FBT