4.3k will he brighter. 5k will look white but will have ever slightly reduced output with 6k slightly worse off and 8 worse off than that.
The side lights I have are more 6k in colour temp but actually look ok and not too blue compared to the 4.3k HIDS i have on my car.
The side lights I have are more 6k in colour temp but actually look ok and not too blue compared to the 4.3k HIDS i have on my car.