I think I'm the last surviving person to still recommend Princeton Tec, but they make some low cost, tough and long burning lights. And you can buy them local (most likely), avoiding the order-now-for-Christmas aspect of DX. And when you get them, they will work (forget the Luxeon lottery, the lower end DX lights are of the will-they-work? lottery).
PT output is not spectacular and there aren't multiple modes to play with, but these are solid, dependable lights that, a few months on, when you've bought better and bigger, you can put into your car or household emergency stores without too much worry.
Or how about a Gerber IU? I use mine every day, inside the house. Outdoors it's pitiful, but it's still a secure backup light (and the light you use to find that throw-monster in your backpack in the darkness!)
EDIT: I guess I'm coming from a utility-minded place, and I'm thinking of lights that won't get outdated later on. I'd probably add a Photon Freedom to my suggestions. Low output but massive use. Real-world, not impress-your-buddies lights.
