I built a copper and brass butane windproof one from scratch, sort of similar to your zippo #2 (but not quite as detailed. I mainly use it as a backup for when my zippo runs out of fuel / forgot to refill or I run out of flints (and also for Cigars - zippo not so good there...). That's the nice thing about butane - it doesn't evaporate unexpectedly on a hot day...
My zippo is an unmodified brass "Venetian Slim" model that I've had for 20 years. Needs a new strike wheel though, it's a little worn, so it may get a few "upgrades" soon.