Checkout Lightwave's lights, depending on the beam type you want they may offer one up your alley. Their Pro series runs for long periods and provides flood, while their Infiniton series are tight spots. The Ininiton series is aluminum coated with rubber for grip etc.
Dorcy has a Luxeon D cell and a newer D cell version for their "Super 1 watt" series. Both are supposed to be pretty good, although I've never seem them for sale locally.