I bought a used Hobart 250 airforce with internal air compressor. It has worked great for my floor replacement project and I will be using it for the DSE minitubs soon. I saved money buying used, $400 on craigslist, and it meets all the needs for my garage projects. I looked at bigger units but realized this one had a good rating and met all my needs. I've only cut up to 1/8" steel but so far i am happy with it. Since it will sit unused more than it is used this was the best way to go for me..good luck in your decision.
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