Anyone tried the Fenix head torches?
Look pretty good, some with USB charging, and replaceable 18650 batteries, so you could carry spares.
I have a Fenix HL55, which is a bit good, and is used for wandering about in very rural areas, as well as working on equipment. Its a fair size, bloody expensive, and runs on a single 3.5Ah 18650 Li-Ion cell. When purchasing you need to remember to include for a cell, and charger, if you don't already have one. I've also got a Fenix LD60 torch, so I'm OK on that front. It has several brightness levels, from reasonable to effing bright.