I bought a set for my Glock 19 from CDNN last week. Green on the front post, yellow on the the rear blade. The green is just as bright as the Meprolights on my Kimber. The yellow is a little bit dimmer, but that is to be expected from what I've read elsewhere. I like the two different colors in theory, as I've had some trouble differentiating front and rear sights on my Kimber shooting in low light before. I'm interested to see if it actually helps, but haven't done any testing just yet.
Installation took maybe an hour at most. I could probably do it in half the time now that I know exactly what I'm doing. Everything fit together nicely; machining seems to be within factory spec. Sighted in just fine, for as well as I can shoot with a compact pistol.
What else would you like to know?