http://www.dealextreme.com/p/mj-808e...-4x18650-57100

I rolled the dice and ordered 4 for me and my bros to use night mountain biking. They're awesome, not as many features (that I don't use) or quite as nice a beam as the more expensive options, but really bright, reliable and with good runtime. Order an extension cable if you're going to run it on your head, the stock one is crazy short.

I wouldn't use the bright or blinking setting, and would tilt it down a bit, on MUP's after/close to dark. It's irritatingly bright when shined right at ya.

You'll have to order helmet mounts, or do like I did and make some out of aluminum tubing and velcro straps.

I paid about $75 each, they arrived quickly and stank like a Chinese plastic factory for a few days.