Steve (Ten Hammers) is so right about a Henrob torch; I have to thank Garey Ford for introducing me to it. All the other A/O torches are great and I still occasionally use mine, but once I added a Henrob rig to my shop I noticed a massive reduction in tank refills. Just another handy tool with its own niche area. For those not familiar with a Henrob, consider checking this link:
Henrob 2000