Something I have not seen mentioned , that to me is a great little thrower for the size (310 meters ANSI rated and 2100 lumens) and also serves as a headlamp / EDC (comes with a clip as well as headband) is the Thrunite TH10 V2. It is a single 18650 with XHP 35 HI emitter and smooth reflector.
My full review with charts , beamshots and live outdoor comparisons …… HERE