The KL4 is 5 watt for 65 lumens. I would like more but 65 lumens is still very bright and I guess I will get more battery life.(the high output 20 min battery life is not good for me) I dont need the light for combat ops like police would need but rather for prolonged searches in dark cellars, lofts, vehicle searches etc. If I need a combat light I have a M3 which I have the upgraded 225 lumen lamps for. I still dont know id 130 bucks is worth the upgrade though.

I also use my light in potential explosive enviroments as well so I need a light in which the bezel doesent get too hot. This was one concern I had with the xenon bulbs. They get real hot. I have a browning black ice head lamp which I use as well, but once again the light output is too low for certain jobs.

getting some good ideas. Thanks guys