I took one low-light class with a Safariland 5188 (which has a model that allows for quite a number of different WMLs) prior to switching to a Raven Concealment Systems Phantom OWB. There was nothing wrong with the 5188, I just prefer the RCS (of which I have others).
I also prefer the old incandescent Streamlights because my home is modest in size, and also I find that my eyes do better, particularly indoors, with the yellower hue of the incandescents. Additionally, the fact that the lower-output light does not overpower the red laser is of importance to me. With a brighter light, I'd need/want a green laser.
I've shot probably a couple of thousands on my 4.5-inch XDm9 with my old M6, and it's held zero had the bulb has yet to go.