I like a standard Zippo for EDC. But that is because I keep track of it and, like my Grandad, will fuel it regularly.

For perhaps the best butane lighter I have found, the Xikar Stratosphere has got to be it. The ones I've used have always performed, feel solid, and I like how visible the fuel tank is. Further research on-line suggests these are indeed suitably reliable and robust. The price point seems quite reasonable.

As usual, I have no affiliation with the folks that make these. Just passing on what I know.