I prefer my headlamp (petzl, 2.9 oz), a backpacking lantern (Black Diamond Orbit, 3 oz), and an emergency light hooked to my pack (Inova Microlight, 0.36 oz.) for my backcountry lighting needs. I use AAA lithium ion batteries in the headlamp and the lantern. All my lighting needs are more than served with less than a pound and I can go 7-10 days without worrying about spare batteries. If I want to go ultralight I leave the orbit at home, but it is an awesome little tent light and also works great for playing cards at night.