After reading a bunch of articles on the SureFire LEDs, and having excellent experience with my incandescent SureFire 6P®, I bought SureFire E2L Outdoorsman in December 2007. One July evening my wife got a call from my brother-in-law's wife saying that his car broke down on I-85. I grabbed my L1 and my E2L, just in case I needed them both. Well, I got there, and sure enough the water pump shaft was moving freely in the engine. We drove to the nearest auto-parts store, bought a new water pump, and came back to the car to start working on it. Good thing I had the E2L with me it provided us with light for seven hours straight. My brother-in-law even said, "Your flashlight sure paid off tonight." It sure did. Thank you, SureFire, for making an excellent product with such great runtime and reliability.