I bought a Chicago Electric 90 amp Mig welder from Harbor Freight a few weeks ago, haven't opened the box yet though. Has anyone had any experience with this welder?... I don't have the "dough" for a quality unit like a Hobart, I am a novice at welding, but did some electric arc welding when I was much younger. Just wondering if this unit is any good at all or will it self destruct.... input appreciated