Fire! FIRE!
i have gone BACK to a zippo, and will not leave. I EDC the zippo, as well as ferro rods in various locations. I practice various primitive methods as well. I am a fire nut, as it has come in very handy over the years. I do not think anyone will argue.
Bic lost me when the eliminated the adjustable flame. It does save fuel..and you can light a fire with it...but when i NEED a fire, or some heat to thaw something, the zippo is better.
Djeeps deserve an honorable mention, IME. I actually LIKE the childproof feature on it, as it keeps it from leaking out in pocket (bic, non CP Djeeps have done this to me) and is easily used with one hand..and it has an adjustable flame. made in france, if that is an issue.
The Zippo- i do not smoke, BTW and never have- when carried daily, and has little fuel thrown at it every 2 weeks or so is reliable as hell. LISTEN to the man who mentioned the inner tube on the zippo, for he is WISE. I cut the band so it nearly covers the whole lighter. It is easily rolled down to light, and can be burned as tinder as well. keep a shitload of flints in the butt...after the lighter is dry, you still have a sparking unit full of cotton tinder that is probably pretty dry.
as for waterproof? I have tested this several times, and am working on it all the time. i went swimming with both a Djeep and the zippo in pocket. Both were as i carry them, nothing special done beforehand.
after a few hours in the river, i went back to the room- vacation, you know- and began trying to get a light.
I took the rubber off the zippo, and dumped out the water- some got in, but not alot, the wide band helped- and blew it out. It lit after a few flicks.
the Djeep was more exposed, and required more work, but also lit within a few minutes.
I had filled the zippo before leaving for vacation, and i think that being soaked in fluid helped it to repel water. The djeep was sealed, yet was exposed, so it got more water in the nooks and crannies, thus requiring more drying/blowing/shaking time. I'll try this again, but in my mind, combined with its easy -but required-maintenance, plus its versatility with fuel and flints, the zippo is the long term winner.
Use the band. Fuel the damn thing. carry it. Use it. Pull that wick up a little and get yourself a 2-3" flame, and you can use that sucker for SHTF fire starting for a while. this gives you some time to perfect the hand drill.
ETA: and you will find Zippo's customer service to be second to none, BTW!!