I have the 200 amp HF unit. I got it for $40, it was a store return that would not feed wire. After removing the broken piece of wire from the liner, it has worked great. I spent twice as much for rent/fill on argon/co2 bottle. I have been fairly impressed with the Chinese welder, the cord & leads are very short, but a longer power cord helped a bunch. It welds metal together just like a Miller does, but I'm positive it won't last as long. brian