Has anyone yet seen a headlamp with a REGULATED CREE bulb?

Since the CREE bulbs are brighter than Luxeon bulbs & use less power I've been waiting for a good company like Princeton Tec to make one with regulated circuitry (to keep the brightness steady over most of the battery life). Ideally it would have at least 3 brightness levels plus a flashing mode.

Seems proper regulated circuitry is beyond those Frenchies that make Petzl so maybe Black Diamond or Brunton could also make one as well.

I have a small Coleman pop-up Cree LED lantern for home and car camping use. It's VERY bright for its size. Coleman comes up with fairly well thought out stuff.

"There are no comfortable backpacks. Some are just less uncomfortable than others."