Just thought I'd chime in with my .02 cents...
Surefire (and HDS from what I've read) are the ultimate in reliability, nice and simple, bulletproof lights.
If I was to do a lot of night hiking, and the possibility of being stranded in the outdoors, I'd want 3 lights minimum, that ran off of one power source, that had good shelf life in case they weren't used often. The LED technology is amazing these days, 3 years ago my answers would be far different. Here's my recommendations, and what I'd likely carry in your situation:
1--Surefire E2L Outdoorsman OR G2X Pro 2 level...E2L wins for size, G2X wins for the Nitrolon. Ever hold an aluminum light in the cold with bare hands? Brrrrrr! Nitrolon rocks.
2--Surefire Saint headlamp. Great flood lamp, 100 lumens, good enough throw for a headlamp. PLUS they do SOS with 3 on/off twists... and the brightness is variable, unlike a lot of other lights, to save battery life. Break your ankle, it would be nice to have SOS flashing wherever you looked, even on it's lowest setting, It should be visible in the dark for a few hundred yards line of sight.
3--4Sevens Quark Mini 123---awesome little lights, barely bigger than a spare battery. Low runs for hours and hours, and provides more than enough walking light, glass window, hard anodized, easy to hold with your mouth if you need to. Also does strobe/SOS/beacon if necessary, and the 189 lumens on high is just ridiculous for a little light like this. You COULD step up to a Quark 123 and gain a clip and pushbutton, but it's a little bigger.
With those 3 lights you'd be good to go basically anywhere in my opinion, and they're all very durable. Cost should run around $200 total, if you went with a G2X, Saint Minimus, and a Mini 123. Good luck with your search! Justin
PS the tint on the Surefire's is *usually* nice and white, and slightly cool in the 4Sevens IMO.