Darryl VanNiewenhuise is the owner of Cyclops and has been a long time XLADV member (Off Road Rider). He wrote this article last year on lumens: facts vs fiction that should give you a good idea of what goes into a quality light. Cyclops is a premiere lighting company that started out of a need to provide better lighting on an adv bike at night. Since then they've evolved into the experts in led technology. Wandering Beast and ADVGrrl both have Cyclops lights! Here's a video Wandering Beast did: Cyclops will be providing lighting for the #xladvproject990 in the form of: An H4 led headlight bulb Two Optima auxiliary led lights; one in 10° and the other in 20° Two amber filters I was running the Rigid D2 auxiliary lights and I could immediately tell the difference; they shown farther and brighter. They really lit up that meadow out at Overland Expo! I think the H4 led bulbs are on back order so once those come in I'll get it installed and be able to show you more.