I bought one of the Tig machines direct from Primeweld, and would not hesitate to buy any product from them. Great quality, excellent service, outstanding value, superb packaging, and the owner answers the phone! I have several welding machines from Lincoln, Miller, and Hobart, and the Primeweld's fit, finish, and performance is as good or better. I also own a Cut50D plasma from Lotos - several years old now. The Primeweld product is vastly superior, but the little Lotos still works. When I replace it, it will be Primeweld.
The Chinese manufacturers run the gamut from dog turds to diamonds. The importer is critical - they spec the equipment to be produced, the accessories, the final quality control, and provide all the customer service. Primeweld takes it seriously. Best bang for the buck, in my opinion.