Sylvania SilverStar.

If you want to pay a little less, and get a little more light than just regular SilverStars. Search for "OSRAM SilverStar". OSRAM and Sylvania are the same company, Sylv operates within the USA and OSRAM is their worldwide name.

USDM Sylvania SilverStar = +30% over stock bulbs
OSRAM SilverStar = +50% over stock bulb.

The OSRAM's aren't "legal" per the DOT/SAE, but they meet EEC (European) standards which I believe are more rigid.

I run TYC Projectors with 4 H1 OSRAM SilverStars. I love it. Looks SUPER white. Cops don't **** with me at all about it, and maybe once a week I get someone who "brights" me because they think I've got my brights on. I quickly show them what bright lights look like and it's over!