I have never used any of the chinese made machines. I have heard good things about Parker plasma cutters. I know Mace loves his. All, but one of my welding equipment is made in USA. The only one not made in USA is a Thermal Arc Fabricator 210 which is made in Malaysia.
Some Craftsman hand tools (their professional series) are very good in quality. Not as good or strong as Snap on, but still very good quality. All other craftsman hand tools are getting worse and worse in quality, fit and finish.
Chinese made welders/plasma cutters are not good quality wise as Miller, Lincoln, Esab, or Thermal Arc yet. There is a huge gap in quality and price. A huge price gap exists between Snap on and Craftsman hand tools, but not in quality. If we were to fast forward 5-10 years from now, good chance this would change.
I don't wrench or do fabrication for a living, but I still like quality tools. I buy Snap On or Mac tools whenever possible (find a deal).
I would rather buy a used name brand welder and plasma cutter over the cheaper chinese made models. I'd much rather spend extra for something that is going to last me a very long time. I'm not the type of person to buy and throw away tools after a couple of years. Tools allow me to make/repair things and in the long run, it save me money. Also, working with good tools mean less frustration because they work and will not fail you when you need it.
I'm not a proponent of "all in one" machines since they generally don't do any one thing well.
disclaimer: not affiliated with any vendor and I paid for all my stuff.
My 2 cents.