Confusion reigns supreme.....According to my popular retailer's web site :Xentec 9005 Xenon bulb HB3 6000K HID w/2 digital ballasts (Ultra White) Will fit my 98 Mark base.....Now would someone tell me what the difference is between: Xenon....HID....LED?. Is this a good/poor/don't use one for my Mark?.....Is one better then the others or are they mostly the same?.....I do need the info if I'm going to change the Halogens out....Info is appreciated.....I am NOT going to do this myself I don't care if a 6yo can do it 5 minutes I won't do it!.....Believe me when I say if it can be "Murphyed" I'll be able to Murphy it. My name is Bruce Hansen Senior Citizen (By the grace of GOD I'm still alive)