Other than the "lambda", the ARC LS is the brightest, pocketsize, regulated LED flashlight available. You can get them from ARC, in the form of a "second", these are second rate and have little if any flaws other than they did not meet the owner Peter Gransee's high-specs. I don't know if any are available right now, if not you can get the Inova X5, it's about $35 and is pocketable and very bright. The Tektite (Trek) Expedition 1900 is a 3-C cell flashlight ($129) that is almost as bright at the ARC LS but puts out a more diffused beam.