I like mine, however, it's the green version. It's bright enough at night to illuminate an entire room very well - well enough to help identify a target and see movement in your peripheral vision. Caveat: your eyes have to be adjusted to the darkness for a while; if you just go in a bright room and flip off the light it's not the same. And while a combat light can blind an intruder, it limits your vision to its circle of illumination - just something to consider that I don't hear discussed often. The on/off tabs on either side of the unit extend back into the trigger area making activation an easy one-finger operation. Not having your laser on the grip can be an advantage in certain situations - no "oops" giving away your location. Lasers are not appropriate for every encounter, so having a choice can be an advantage. The combination of the CT Railmaster and a good combat light is perfect for me. I move the laser back and forth between my FNX 45T (home defense) and Five-seveN (shoulder bag conceal carry), and after the first slight tweak on sighting it in, it has stayed true to point of aim at 15 yards on both firearms.