I asked many of the same questions not long ago, and I ended up with the Zebralight H602w XM-L
I'm extremely happy with it. The long run times are convenient in counter to the inconvenience of the specialized battery. Even if I mess up and forget to charge the battery, the run times on lower output modes are enough to get me through a short trip without worry.
I did get a backup light that uses standard AA batteries, Eagletac D25A Mini, but have subsequently lost it, at home. ;)
Not much chance of losing the headlamp though, it's big. Wouldn't be ideal for night runs, but I haven't had any prob using it for night hiking or in camp.
The spill beam profile of the standard Zebralight's are pretty ideal for a combo of camp and trail use. I was considering some other options in flood modes, based on the info out there from flashlight obsessives, but most of the info preferring "floody" models for camp use seems to originate from "car camping" types, who don't take into consideration the types of uses we are more likely to encounter, on and off trail.
Anyway, long story short, it's not the lightest option, but it's certainly not the heaviest, and I don't think I could downgrade on output or runtimes at this point. I highly recommend the H600 or H600w (I like the neutral white, but it's a bit weird if you're in a group and the other's have cool white LEDS, so use your discretion here).