Ive used this one for years with no problems.
http://www.micromark.com/PINPOINT-PROPANE-TORCH-SET,8312.html Except when I need to work on something bigger then a ring or pendant, like a copper bracelet. Then I just head out to the plow truck and snatch my husbands torch that also screws onto a small propane tank. That one has a bushier flame like the one that George is using now, and that came from a hardware store.
Call me cheap, but they work for me, plus they don't take up much room. :)
Tam