Posted: 04/10/2016 at 15:11
David - I have the Petzl Nao and really like it. Burn time probably IS lower than advertised, but not by a long shot.
You can buy replacement rechargeable batteries to use when they run out, to save you having to faff with changing to AAA (using the AAA batteries isn't a particularly elegant solution).
It is expensive, but worth it in my view. I'm sure others will be along to big up other brands though.