I have an older one which I am very happy with. Here it is on my CCW / nightstand G-19. (I do not carry with the light, I keep a Surefire in my pocket).
I also, got a new one yesterday that is even more awesome. The new is even brighter, it has a hot center and a very broad surrounding nebulus.
I will probably swap the new one for the old one for night stand duty and leave the old in my range for my "game" G-17.