This outlines the best torches to use for this project.

One thing to always keep in mind is that dual fuel torch systems (those that use a fuel and oxygen to intensify the heat) can be purchased to fit either refillable tanks (more economical in the long run) or disposable tanks (less cost up front and often less intimidating for smiths new to using this type of torch.)

Be sure to read descriptions carefully as you shop around for torches so that you don't end up with a setup that doesn't align with your goals.