I do use the handhelds too, but I find that the little cooks torch is a bit hotter and melts stuff when I least expect it. I have got a bottle of butane in my workshop (spare bedroom) which I am a bit concerned about, although it has been there for about a year or so, and has been fine. I cant go up and look now to see what make it is, as hubby is asleep (working tonight, 12.30am start !!!) but I will tomorrow, its not Sievert, but another make similar.