I'm looking at different kits from Phillips, Osram, Hella and they all advertise the same thing, bright blue or purple HID lights that just snap in with a ballast. Some claim 6000K other are 4800K and 8000K. The prices range from 399 to over 700. Has anyone here had experience with any of the kits (good or bad)? Anyone know what the lumens output of HID lights are compare to Halogen bulbs. I keep hearing 2x brighter, 3x brighter but that's all subjective. Also on the Hella website it says not to buy there bulb kit because the housing wasn't designed for it. They seem the most honest.