My torch set-up at home is propane/oxygen.  Although it is small – only about 30 inches high - it cost $500. It’s also so heavy when full that I can barely get it out of the car and down the stairs. 

Today, Alan showed us a variety of handheld torches, some propane, some butane.  He used one to sweat solder the front piece of an overlay brooch.  He was really excited about these torches, as they are portable, convenient, and do the job.  They were quite inexpensive, and so manageable for the beginning or intermediate jeweler! My old setup may quickly be replaced by one of these light, low-cost options!