+1 on oxy- propane
Last week i finally got my smith medium duty oxy propane system, with tanks, cart AND gas saver...got it put together and leak checked (watched the smithequipmenttv and prorancher videos ~10 times) last weekend. Today was my first use for heating. I used the cutting torch since I was making small stuff...
Compared to my gas forge (homemade blown brickstack), it heats much faster and get to sparklers temp easily. It does spot heating way better than the forge of course. It also doesn't continuously blow huge quantities of super hot air, so i can pull the whole works into the garage and not melt my garage door insulation. And the gas saver is fantastic! Saves time and fuel. I rigged up a fat wire hook to hang it better on the gas saver arm.
I made a garyhuston mini cross, a bodkin point, a nail-cross (also my first try at forge welding...fail) in an hour or so and hardly used any gas. Propane is cheap and a 150cf oxy fill is only $12.
Small experience base so far, but it is looking like a good move! I have a small plate cutting job planned, expecting joy.