I don't have that machine and don't have experience with a TIG at all but I do have a Thermal Arc Fabricator 251 MIG and really like the machine. It's very powerful but can be adjsuted down to work with thinner metal as well. I bought it used and have had zero issues with it besides the liner so I feel the quality is very good. Again, not specific to the machine you refer to but more in general for Thermal Arc... hope this helps.
STeve
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