What's a good intro welder for subframe connectors?

I would not attempt to weld subframe connectors with any 120V welder. If you are trying to save money look around for used. Stay with name brands. A dual voltage 120/240 would be nice but they cost more As mentioned above you can use argon, but I've always used CO2. CO2 lasts a lot longer because it's a liquid and is cheaper to refill I have two Lincolns, a little 120V "weldpack" I bought years ago, and a newer Lincoln 230V 180A I bought new.