Originally Posted by froze

First off you don't need to carry a spare bulb if you have a dual beam setup like the Cygolite's; if one of the beams fry you simply use the other; just have a spare bulb at home or go to Radio Shack and buy another. By the way my cheap $45 Cygolite Metro with dual beams still are using the original bulbs after 4 years averaging about 2 hours of use a night from October to March (except when there's snow on the ground).

Second you can get 16 watts of dual Halogen's for less then $90 and 12 watts of dual halogen's for less then $70 from Cygolite.

Third; a bike light will NEVER make you look like a vehicle on the road unless you mount a motorcycle or car headlight to your bars! That's why a front flasher is very important.