basing on what i read everywhere ....
4300K is OEM color for the likes of BMW and gives more lumens ....
3000K very yellowish and best for off roads..... wont do well with street lights
6000K white to bluish ..... balance of function and "fashion" hehehe. But for city use this may also work nicely (well i think)
just had a 3000K HID installed in my civic .... am loving them since they reflect nicely on asphalt roads ..... and without adjusting the headllight assy. alignment yet oncoming cars seems not affected with the light ....
my only gripe is that the right side seems to be poorly illuminated. must be the alignment ......