We have Koeheler lights on our trucks and they're okay, the run time is bad, because the batteries are like 6 yrs. old, and it's never " in the budget to replace the battery packs on 60 or so flashlights". So anyway, I bought my own Streamlight Survivor LED, it throws a tight white beam which does pretty well, unless it is very heavy smoke, or you have already opened the nozzle and are making alot of steam, then you do get alot of reflection off the steam, and lose alot of your beam. We had a 3 room job that had flashed maybe two weeks ago and my captain knowing I'm a " flashlight guy" as he puts it, commented on how he could see my beam reaching further than his, and he was in front of me. Side note, ALWAYS have a backup light on you.