Firstly, I realise I am probably beating on some fairly scared cows here but I personally cannot live with the performance of a standard zippo. I dislike the fuel smell, and I down right despise the fuel evaporation issue. Having said that I love the form factor, the fiddle factor, and the huge range of zippo cases available. I am not a smoker, and don't use a lighter daily. I don't need one that survives river crossings, demolition derbies, or reliably lights in howling blizzards. I do realise that the humble bic addresses almost all my needs. However, the humble bic is a nasty, utilitarian piece of crap plastic. I am not a big fan of plastic, and I dislike the fact that it does not have a closed case form factor. I want to pocket carry it and hate that a bic lighter gets filled up with pocket fluff. Thus my question. A decent functioning butane insert for a zippo would address my need for metal, for a closed case, for aesthetics, and generally make me happy. Having said that the question becomes, which butane insert? I don't need the turbomatic 9000 (I have a bunch of torches for that) I just want a flame. A bic lighter sized flame is plenty. However, I want the reliability and longevity of a bic, it should just work, no muss no fuss. Open, flick, fire no matter if it was filled yesterday or months ago. Given that list of requirements, which is the best insert?