Harbor Freight is awesome.. I buy all my disposable rubber gloves there... and my disposable tools too! Sense the sarcasm??
They are fine for cut-off wheels, welding wire and disposable gloves. For a welder spend a little more money and get a Lincoln and unless you are doing strictly sheet metal, spend a couple hundred bucks more and get a 220V model. It will last.
Not sure what sizes they make, but since 2003 Century has been made by Lincoln in the USA and are very affordable.