Just got 2 sets of Osram D3S Night Breaker 66340XNN bulbs (+220% LOL) and replaced the stock Phillips in my Q5 that are 7 yrs. old, almost no difference. The Osram's are very slightly brighter due to more side glare, have a lower cut off and have multiple artifacts like dark lines, weird shapes of light and shadows. My '14 A6 also had the same bulbs installed and my wife says that they are not as bright as the old OSRAM 66340HBI original bulbs that they replaced. Big disappointment after spending a lot of money. I'll let them break in to see if that helps before looking into what I can replace them with. I ordered a 3rd. set from a reputable site to see if maybe the others were fakes. I was hoping for an LED replacement but after reading here...maybe not yet. Are a lot of them fakes?