I have 2 sets of Rigids and I LOVE them.
I have a set of Dually spots on the bumper and a set of Dually D2 floods on the windshield. I used to have KC daylighters and they are, in fact awesome. The Rigid's are just more awesome, and more expensive. I really like the pure white light they emit, and the small size. Couple that with the very very low power draw and the fact that don't create much heat at all, and you have a very nice light that you really don't have to worry about.
I have seen just the Dually D2 driving beams on the windshiled which is another good way to do it. It's a spot/flood mix.
And yes, they are brighter than a halogen light. Stupid bright.