I bought a bunch of Surefire LED lights back when we first talked about lights. The bulbs are now all dying on me, and they are expensive and a pain to replace. I have been trying (admittedly without using tools, which I'm sure will solve the problem) to get the bulb out of my L2 for a couple of weeks now, no dice.
That said, they sure do shine brightly and they are cool as hell. In fact, I can even wear my SEAL/10th Group badboy sunglasses at night and see stuff when I shine the light on it . . .