In Maglights I have a 2D with 1 watt LED and a 3D with 3 watt LED -- nice lights, the 3D light has lots of reach and great runtime.
In lights that are easier to carry, I'm very partial to the lights
FourSevens has available. I have the 2xAA
Quark Pro QP2A and its smaller sibling the 1xAA
Quark Pro QPA.
My aviation survival vest has the 2x123A
Quark Tactical QT2L-X programmed with the 65 lumen medium output as one mode and the 360 lumen Beacon for the second mode.
IMO FourSevens' quality is as good as Fenix but with a 120 month (10 year) warranty.