I used to carry a Zippo but it leaked in my pocket quite often, made my cigars taste like lighter fluid, and needed fuel all the time. For me, it's damn easy to beat a "clasic."
I have a Colibri butane job with a cigar cutter built onto the back of it. This lighter can sit unused in my toy drawer (I only smoke 2 or 3 per month) for weeks on end and then fire up a killer blue jet flame with a single click. Never fails. And re-filling just takes a second and is not messy at all.
Second choice would be one of the mini Bics.