there is a HID kit call K2 8000k ? is it good compare to the 6000K philips kit , seem like the 8000k is brighter right ?
what you guy think which one is brighter and last longer ?

There is a lot of confusion between xenon lights. The 8000k you are talking about is the temperature of the light being outputted, 8000k being bluish while 4100k being more of a pure white color. Lumes are what measures the amount of light being outputted from the bulb. The brightness of the bulb higher k is actually not as bright. The brightest xenon bulb as of now I believe are the stock 4100k xenon bulb.

If I were to replace my xenon bulb, I would exchange it with the new philips ultinon 6000k bulb.