I have used Hella in the past with happy results. Recently I have ordered Bosch H4's from VERTEX [www.vertexauto.com] @$39ea. I am equally pleased, if not more so because of the price. These types of lighting provide a superior illumination with the 55/60 bulbs that come with them. Depending on where you live, you can get even better results with 55/100's. I think that the dazzle from the 90/100's is unsafe. Installation is a breeze.