Running smaller wire and lower amperage on a 220 machine can be done easier than getting more "heat" out of a 110 machine when you need it.
And the times youll need that extra heat is when your welding something that matters like frame/suspension/rollcage etc...
Find a Miller 175 or Lincoln and dont look back. Youll only have to buy it once.
FWIW I have a Lincoln SP100, ESAB 253, 300amp Miller TIG and a 320amp LINDE 3-phase welder. Each have their place but the big LINDE will weld sheet metal better than the 110 LINCOLN.
Chris