I need to order today a pair of D2R xenon bulbs for my car, because they burnt out which one color do you choose guys more often? 6000k or 8000k? Im thinking about 6000k from this website http://www.xenonplanet.com

 

8000 is illegal in some areas. Is this an add-on HID kit or the stock?

 

Go with the 6000K
8000K is too high a kelvin and you will start to loose brightness.

I may look brighter when looking at the lights, but when looking at the projection of the lights on the road, it will not be as bright as 6000K
FYI, from the factory, manufactures use 4300K