so I searched the forum and could not find anything concerning LED vs. HID, which of the two would you recommend and why? also have another question I currently have a 2014 D and my brother to outwit me decides to jump on a 2015 D. we ordered the same HID's that I currently have on my D. while they work on my 2014 just fine with a canceler and ballast no relay needed, my brothers "same model HID's " does not on his. when he turns them on they stay on for about 5 seconds then while one is of the other is on when the other turns on one if off. we even removed the one n my D and same results. I put his on mine and guess what they work..LOL..i am thinking they changed something on the 2015's..HELP please..