Excellent follow-up, do not get sucked into the "blue bulb" mess. This created dangerous lighting levels (read as NO GOOD LIGHT). I fyou want real good light convert to "E" spec headlights, check on the legal implications. Or check out Dan Stearns lighting web page, great technical information and myth busting.
P.S. I am running 130/100W Bosch E-spec headlights, I have MUCH light but it requires full secondary wiring.