I currently have a ARC LSH-S that takes only 1 123A battery. I love its size but i am looking to see if there is one that is the same size and uses the same battery but is one of the luxeon V led's. I would mabye think about a 3 watt luxeon but would rather have the extra light and have shorter battery life. I guess it would be best if it was regulated and had a switch like on the ARC i have right now. I have been out of the loop as far as led flashlights go after i bought my ARC.. so out of the loop that i just found out today that ARC went belly up! Anyway any links to place i could buy one or somewhere i could buy a pre-modded light that fits what im looking for would be great.