what light(s) are particularly exceptional in this regard? I know of lights like the Olight SR90 that put out a large volume of light, but that comes at the cost of a similarly large size. that is understandable given the requirements of good heatsinking and the accommodation of adequate batteries, but I find that more often than not I use my lights for momentary illumination and so am willing to compromise on those two points. any overall size would qualify, anything from EDC style lights to larger and heavier lights, as long as the lumen/size ratio is high!