Wich brand to buy for HID XENON aftermarket
 

I had put aftermarket Xenon HID with relay into my 2007 e70
Sometimes when i start my car and the light are on automatic one of the h7 xenon bulbs will not go on. And after i turn the lights on and off it will turn on again. In the morning if i just step in my car and wait maybe 10 seconds then start the car usually both bulbs will go on. The battery of the car is new so i dont think its that problem . I think its the problem of the balast of the xenon hid. Who has installed a good set in his e70 without any problems?>