Since I only bought one pair of bulbs (BMW high performance), which is made by Philips, I decided to put it on the low beam (outer), since it is more useful than DRL and high beam. So far I have had them for 10 month. These lights seems to offer better distance rather than major improvement over brightness on the low beam. The lights are somewhat whiter than the stock halogens, but still kinda yellowish. I am looking into changing the bulbs again soon, possibly Philips Diamond Vision H7 5000K bulbs. This time I will order two pairs.
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