Has anyone tried Eastwood 135 amp mig welders

I have the HF 120VAC wire welder with just the high/low setting. I have used it for sheet metal on several cars with OK results after grinding the welds. I found I need to use the lower setting even on fairly thick exhaust pipe or it can burn-thru. If you can, place a copper spoon behind the sheet metal to avoid burn-thru (true for all welders). I understand that gas makes it sputter less, but my $90 model doesn't have that option. Mine spits droplets of molten metal, especially if it hits rust, so must protect everything around. My main problem is that I can't see well, so often weld in the wrong spot. Don't know if the HF auto-dimming shield or too many vapors coming off.