I have been welding for over 40 yrs. & prefer the 220 v MIG welders. When Mig welding it is sometimes difficult for a beginner to know how much penetration one is getting for anything thicker than sheet. You will be able to set the heat setting higher for better penetration w/a higher votage/amp machine. This is extremely important on thicker metals......like welding in a X-member.

On some areas like windshield post (when chopping a top) I prefer gas or TIG welding for penetration.

Good luck ! Don