So I have always ran HELLA glass lens , very very good light focus, & for the last 8 years or more I've had HID/ ballast system from DDM Tuning, great products & service & with a Life Time Warranty.
I had 3 problems with one side light not coming on than the other side . I have 2 complete light sets so I could just change out & send in for testing & replacement.
I decided too change to their LED system, only a two year warranty but should be trouble free, a bit brighter & still have high & low beams!
DDM Tuning: HID and LED Lighting this is what I have now, with the 55 watt bulbs
http://www.ddmtuning.com/Products/Saber-50W-H4HL-LED-PR what I'm going too