LED stuff. Have a set of the D1 version and like alot. Not gonna defend them otherwise but to say they are good.
I LOVE LED stuff, but I'd have to ride with a set of them on before spending that kind of $$. I've been looking at some 27W LED array lights (9x3W LEDs) that I might try, as it would cut my power consumption in half compared to my 55W halogen lights. But they're only about $110 for a pair.