What Watt, do recommend for that size?
Is there a difference? How do we know or not, if their ballast, isnt a driver, and that their HID, is like that of a car, with HID bulbs, and therefore could run LED, as there isnt a difference.
The Ballast has a dimmer, well, set power modes...
They never said you couldnt run the light on another driver, but they do say you'll void warranty doing that, so it's always a choice you can make or chance you take.
With the efficiency as high as it is, with their ballast, I dont really see the difference, then help me see