Excellent link!

I commute through a lot of unlit trails and dark sections of rural and neighborhood bike routes. I ride with a Flamethrower and a Vega as my back up. I use the Flamethrower set to illuminate the distance and Vega set to illuminate just in front of me, or to blink depending upon the portion of my commute.

At 15 feet illuminating a horizontal surface, it might look like the Flamethrower throws a huge bright spot. On the surface of the road, the beam spreads out to give you a nice view of what's ahead. I figured out pretty quickly that the farther ahead that I can see, the faster I can go. That focused beam, more than anything else, has allowed me to safely ride a lot faster in the dark.

I have had several people tell me that they thought that I was a motorcycle on my approach. The cagers definitely give me a wide berth when I have my light and flasher going.