I have been buying various automotive LED lighting for the past few years and found that the cheaper LED's do not last as they state in the ads. I had 2 sets that only lasted a few weeks and burnt out. I now know that the Philips LED's are guaranteed 8 years and that they stand behind their products. I which they would come out with a duel contact switch back for the turn signals and LED headlight.
I'm so happy I paid the price for them. These are eye piercing bright, nothing like those cheap crappy bulbs. I needed to purchase 3 pairs for my high mount center brake light. They are perfect!