[LS short box]

I have always been a Miller welder guy. Never had an issue. They just work for me. I'm just a hobby guy not a production shop..
Harbor Freight has good to great reviews on a number of their products.
I think it depends on your usage. What service support does HF provide if there is an issue? Again nothing against HF but I don't think the folks at the HF store can provide much tech advice. Where I buy my Miller equipment I know they can help tech questions wise.
Spares for HF the tips, drive wheels and other stuff that wears out as you use it?