Quick note on the Daniel Stern products. I installed the full setup in my JK, including harness. His support was fabulous, and the light output was better than I ever could have expected.
But I started running into problems pretty quickly, and I started blowing bulbs left and right. I spend a lot of time offroad and live on a dirt road. When I reached out to Daniel, he told me that while the product is designed to produce the most amount of light, the higher amperage makes them very brittle. After going through 6 bulbs over barely a year, I recently swapped out the bulbs for the new Lifetime LED bulb conversions. I still use my Cibie's and harness, and it works great, no problems.
If interested you can read more here:
http://www.x-plorenowxpeditions.com/2014/01/16/let-there-be-light-part-ii-even-more-light/.