I started off 25 years ago with a 110V Lincoln Mig machine with shielding capability. I used it for sheet metal welding and tack welding frame components, then took the frame to a shop and had a qualified welder use a 220V machine to weld the component I tack welded.
Later, about 20 years later, I bought an ESAB 220V Multimaster that does tig / mig and stick. I kept my Lincoln 110V though and made a bracket to place it above the ESAB. This allows me to switch between welding on plate gauge steel vs. sheet metal without changing liners and rollers.