I purchased a HF MIG(150) and also have the Eastwood Stitch/spot welder combo(very old version, when they first stated selling them in early 80's). The stitch welder was a miricle tool tool for a DYI person back when the cheapest MIGs were in the $1k range but I can do everything that it does and then some with the new MIG. Make sure you get one that is setup for dual wire (flux core and gas). You will need to rent/purchase a 75/25 bottle for the gas but there is SOOO much less to grind using the gas. Flux core still has slag to knock off plus the welds are larger(or at least mine are) where as using gas you make much smaller beads (I use .23 wire for sheetmetal)
Just kiddin'. I knew that you meant .023