Really boosted the output of my eternaLight ergoMarine with an easy mod. I simply replaced the existing LEDs with new 26000mcd 5mm ultra bright white LEDs purchased from warden_jp2002 on ebay. The ergo is now brighter than my eliteMax (even in overdrive). The light now has more throw too, as a result of the narrower beam width of the new LEDs, but there's still reasonable side spill. I'm considering doing the same to my eliteMax as well.