I have over a dozen headlights. The best is by far the Armytek Tiara Pro modded by 4xE21A emitters. The tint and color rendering is absolutely gorgeous and the light is super efficient for the size. It can also sustain peak output almost indefinitely with the 18650 extension tube. I bought my E21A modded Tiaras from Clemence at Virence.com. You can PM him here to see if he still makes them.