if you do decide to HID upgrade, please make sure you buy quality bulbs and ballasts. Philips and Osram are the leaders. Do not buy anything above 6000K as too much luminal intensity lost. If you want the most output with white/slight yellowish color, get 4100-4300K bulbs. If you want white/slight blue look without sacrificing too much luminal loss, get the Philips 6000K ultinons only. Make sure the base has been modified to H1 and get D2S bulbs and not D2R(have metallic band across bulb). True ultinons have a blue ground bar as seen below and the salt crystals within central chamber is maroon in color. If pics disappear after 1 day which Im sure will happen, go to pics under mact3333 at Elisetalk PhotoGallery.