personally i wouldnt go over 5300k tho. 6000k is a lil more purple than blue and the higher on the kelvin scale the less light. so simply lower number means more light. As for Bernies kit its very nice and high quality but several members have had luck with other brands and things.. good luck with it ~Matt~
been a member ever since i owned my 1st 300zx i love twinturbo.net thanks guys