Thank you for the welcome! We installed the Silverstar Ultras. We have seen a slight difference with the Ultra's over the standard Silverstars. One reason for considering the HID units is because of the much longer life expectancy over the Silverstars. I think since we've been using Silverstars we've averaged 1-1.5 years out of each set. I guess I'd rather purchase $200 HID lamps and let it last the life of the vehicle, then to spend $40-50 a year on bulbs. We are disappointed in the stock high beams as, granted the distance coverage is slightly increased over the low beams, the brightness is not. Frustrating. I have even thought of buying some HID driving lights to fit in that 6 3/4" wide x 3.5" tall space below and to the right and left of the license plate to help with this issue. What are your experiences (if any) with after market driving/bulbs? Thank you for your time!