I cheaped-out on buying welders and air compressors for decades. When I retired, I purchased my first "brand-name" 250 amp Mig welder. Costly? Yes. Problems? None. Since, also purchased a brand-new "brand name", gasoline-powered arc welder, (Gasoline, because diesel engined models cost double the price) that powers my home during electrical power outages, and my MIG and TIG when mobile. Best investment I ever made. Welding is a professional trade.