I'll bet you will dig 18650's- they are sort of AA's on steroids. I am very happy with a Zebralight headlamp powered by an 18650 (they have several variations) - the lamp unit can be detached from the headstrap and used in the hand, if desired. Several other manufacturers also market 18650 headlamps.

I also like my Nitecore P12, a definite thrower. It is not the only good one out there I am sure...

It does pay to do your homework