Conclusion: Take a Surefire L1, give it an injection of steroids and a little of the DNA from the Surefire A2 and L4 and VOILA! you have the Surefire L2 Digital Lumamax. Luxeon V LED, 2 stages of output, brighter than the L4, regulated, and tough as nails. In a word: "Sweet!
Pros: Water resistant, Tough, Regulated, Both Bright and Dim light available in one light, Easy battery change, Lightweight
Cons: A little long compared to other Surefire "pocket" lights.