What counts in light is Foot-candles..
Watts Schmatts, If you want more light, nothing is like adding driving lights. Put almost any driving lights in addition to your headlights and you will see a huge difference. When I see headlights that are blue or whatever, they look totally goofey to me. I cannot image what $1000 headlights do for you, xenon, or not. My 1000 watt pressure sodium bulbs in my grow room are only $240 each. I would never pay big money for headlights without trying more lights first. Some Hella and PIAA lights are really bright.