What's the difference? A blue coating that actually HINDERS the lights. See this link.

http://www.overboost.com/story.asp?id=102

Every time I read it, I get cautious about buying fancy bulbs. Also, the reflector is an important part of the mix. SCC did a test on fog lights a couple of years ago, and their winner threw a lot of light further than most bright headlights. They used 55-watt bulbs. Of course they had huge reflectors. They ended up putting them on their project Sentra.

98 Silver Frost SVT 97 BMW 540I Sport, six speed "Blue is for sky, black is for soil, and white is for simplicity, purity and hope for the future" "A coveted car should never stunt your life, but should make it more rich and interesting."