I ordered these lamps, because I was absolutely not satisfied with the light output of my normal lamps. Mostly I was able to beam at night no longer detect when a car behind me is gone. Especially in wet conditions, in conjunction with new, dark asphalt, it was often very difficult to drive. These blue lamps (for me, the light is more white than blue), it has become much better. A perceived increase in light output by at least 100% has really excited me. I was told that "yellow" light at the same type is always much better than blue light. But I can not agree with in my case. The next time you Lampelwechsel I'll buy it again!