I have bought this burner as a replacement for a defective burner. The installation is really easy to do (always nice note the manual;)). After installation, I could not really notice a distinct color change within the first hours of operation - is certainly also about how much care is taken. The most important thing: light is really very clear, clear and beautiful light - everything really is a bit better than the old burners. Lights now approximately 1 year for every trip in the car, of course, should like to keep a lot longer ....
