I have a Hobart 140 with gas from Tractor supply. I wore out one of their Century MIG welders and the Hobart was a great improvement. If you're primary work is sheet metal panel replacement, I don't think you can beat it for the money. However, if you're planning on welding heavier stuff on a regular basis, I would spring for a Hobart 220v unit. In addition, TS also carries all the welding wire, replacement tips and the 25/75 bottled gas.
Just make sure that which ever welder you buy has a solenoid controlled gas feed shutoff.....the less expensive models don't completely stop the flow of shielding gas when you release the trigger and the only fix is to replace the $100.+ handle and line.
Dave
