I am planning on to go for D2S 8000K bulb for my 2004 E320 sport. It will looks white/blue and alsolutly no Yellow.
As for my understanding. It's still HID. it looks still bright enought. and by adjusting the LV , you will get good distant and visibliltiy.
I personally have a BMW 330i and did the same thing, adjust the LV it looks all good. so much better than before.
but one question, does any one know how to adjust the LV of the Light on the E320 (I know how to do it on BMW) even both have a auto LV, but you can manually adjust the Starting LV.