Over the years I've moved in a different direction than power, power, power. Now, I'm all about run time. I like AA's, 1 or 2 and multi-stage. Most of the time I used the lowest settings, but can bump up as needed, 90-120lumens is usually sufficient. BTW, some multistage lights start high, usually tactical lights, and some start low, my preference for the woods. Tactical high to low for urban use. If a light can't run all night and I use tentatively use 8hrs as a guideline, then I don't want it. Lower levels also save your night vision. Once you use a portable sun, you become reliant on the portable sun just to see at all. Part of my bias is from my WFR training where you may have to tend to an injured victim, perform extraction, etc. through the night. I don't want to be changing batteries in the middle of that. Oh, and I like headlamps for hands free. l have many, many various lights, but for high power, long duration, if weight is not a problem, like searching, it's hard to beat a Maglight D cell LED. Very bright and will literally last for days.
Just my .02