4300k give the most improved visibility. They have the least "blue" tinge to them out of the available colour temps.
6000k are the best compromise between visibility and "looks" if you like.
8000k are still a good improvement over standard non-HID lights, but with a much more pronounced blue tinge to them, overly so in my opinion. A bit too "boy racerish" for my tastes.
I did a
lot of research into all aspects of retro fitting HID's, including what colour temp to go for. The general feeling from many folks who have carried this mod out, is to go for the
6000k versions.
I did on an old Calibra I have for a runabout as a second car, and I can honestly say the improvement in lighting was fantastic compared to the stock items. And for those who are wondering......
no they dont dazzle oncoming drivers. No more so than factory fitted units would. After fitting these a while back, I went out on the roads at night to test them and had 4 different people, friends of mine, drive towards me on various roads and asked them to report back if they were overly dazzling or not.
They weren't. The only time I've been "dazzled" by a vehicle with HID's has been with the latest shape Range Rovers, but this is primarily because of the increase in height level that the headlight units physically sit at on the front of the vehicle.
So, here's some pics of the kit I bought and retro fitted. If need be, I can link you up with a fitting guide I wrote on another forum. It's Vauxhall specific, but may give you a few pointers.
HID Headlights:-
Click for larger images.



