Bernzomatic will work, but holding the tank is unwieldy and
produces a change in the flame you have carefully adjusted when you
turn the tank over to get the flame pointed down. There is an
attachment which gives you some hose between the tank and the tip,
it’s not very expensive and would improve the situation, but I
can’t remember who sells it. Another cheap option would be a
little pencil shaped butane torch which is refillable — same
problems with inverting the torch, but the cost here is two for
five dollars at Big Lots Store. also an option would be the Blazer
or its cheaper clones and the micronox torch from Radio Shack.
With the latter, there is a very small flame possible, which is
good for some things — I don’t know how big a flame you can get,
though, and you have to buy replacement cylinders from RS.
Another really cheap option is the alcohol lamp with the faceted
sides so you can set it with the flame hanging out sideways and a
blowpipe. You can learn to use one of these for small solder work
and they are supposed to be very good once you get the hang of
using your puffed out cheeks to supplement the air flow while you
inhale through your nose. Evidently it was good enough for the
ancients, who never bought a Little Torch (cheap, cheap, those
Etruscan bastards!). I messed with it a little before I went on to
another torch, and was fun.
You might also check the local pawnshops, I often see Prestolite
acetylene-air torches available here that way. That’s where I got
my tanks and regulators in a refrigerator repairman’s caddy with a
Victor torch for $75! The Prestolite should be cheaper. I see
many on list saying they like the Prestolite for silver work –
lots of heat available.