If you're looking for the best, go with Cibie. I have the IPF H4 conversion headlamps, 4Crawler wiring harness, and 55/100 Hella bulbs, and while it is a huge improvement over stock, the Cibies are much better. Cost is hard to swallow, but man, I've never seen another halogen headlamp come close to the Cibies. If cost is an issue then the IPF or Hella H4 conversion lamps are good. Just be sure to get the wiring harness, that makes a noticeable difference by itself.