turdz: the light output is diminished in higher color temp bulbs not only from the coatings put on the bulbs, but also the gases and salts that are used in the capsule itself. To my understanding, the gases and salts used that achieve those high color temps, don't create as intense of an arc. either way, we both agree that lower color temp is better.
kidynomite: If you aren't doing it for yourself, spare everyone driving around you. It's not just a matter of courtesy, it's also dangerous for other drivers to have that much glare shining into their eyes. Besides, why not do it if it's not going to cost you any more than a drop in kit? It'll yield 2x more light on the road than a drop in kit and there will be virtually no glare. Whether you think you want that much light or not, you'll be glad you did it right when you get done.