in the past on my Jeep Commander, a Chrysler 300, and a dodge ram i got the Sylvania silver star ultra and was a huge difference in brightness and color and was totally satisfied, so when i got my wrangler i assumed the same result. the only thing that changed when i installed the new bulbs in the wrangler was the color and even then was hardly noticeable. i was very disappointed and run them for a few months, might as well of had candles for headlights. i tried readjusting with no sucess. i now have the JW Speaker 8700 J series and was totally worth the price, brighter than the HID's on my wife's Kia Optima.