After testing all sorts of lights on my SED and my SEUC, I can state that the best light out there is the old Kuryakyn HID system that was made by Sylvania Valeo. I compared that against the stock lighting, the Harley HID, the Harley LED and the TruckLite LED, and there was no comparison. Those lights were in a class by themselves. Too bad they discontinued them in favor for the less costly LED's. That said, the Harley HID was crap. Still have that sitting on my bench, but those were wrose than the stock halogen lamps. Between the Harley LED and the TruckLite LED - head lamps only, the Harley performs a bit better and has a more consistent pattern I think. However, you can't beat the price point on the Trucklite, which I think is a real bang for the buck deal. I will say I was blown away by the Trucklite passing lights. Those babies rock! That all said, if I was to put together the Ultimate set up, I would go with the Kuryakyn HID, if I could find the 7" version around somewhere still, and the Trucklite LED passing lights.
My .02 fwiw.