See my post 11. And no, I don’t work for Costco. These are just the most amazing flashlights I’ve ever seen.
BTW, I used to use a $150 light for night commuting on my bicycle. These little gems are brighter on 3 watts and a snap to mount (using two hose clamps).
In fact, here they are:
http://www.survivalistboards.com/showthread.php?t=218055
I have been using the one I have for about a year, and it's like having an extra headlight in your hand except for the size. Slightly large for the pocket, but not too large to carry with you. Mrs. Joe keeps one in her vehicle, too. It also has a strobe function. 2 CR-123A Lithium batteries, and mine has functioned well in all sorts of weather, from -30F to 104 above.
You don't want to look into it.