6k is the brightest possible HID light you can get, none of those lights you also listed off will even fit an eg civic, im not sure about newer (ive never owned a 96+)the honda 95 and down civic uses 9003 bulbs according to the sylvania company, if your looking for pure light go with the 6000, its absolute brightest has a white/bluish tint to it. I use those or 12k for my show car (12k has a bluish purplish light)