I have had good luck with the Peak Solutions Matterhorn (AAA). Back when I got mine you could do some tailoring of the light to trade off runtime vs Brightness. I got the bright version (similar output to incandescent mini-mag) and the runtime is pretty impressive. I carry it all the time and use it a lot. Only draw back is having to remember to change the batteries twice a year like a smoke detector. I once forgot and got about 10 months out of a battery before it started to get really dim.

- Eric