I use the crap out of my plasma cutter but for someone putting a shop together it is really about 95% want 5% need.
I would just buy a good name brand 240v wire feed to start with. Dave Bross is right about the stick welding stuff but he obviously knows how to weld with one. It is really alot of time and energy to learn how to correctly weld stick although it is a lot cheaper on the outlay.
When I was looking for my whole suite of equipment the used stuff was just as expensive as new and e-bay was more expensive than my local welding supplier.
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