Cheap welder recommendations for brackets and exhaust?

[RManson]

Flux core is a terrible idea if you want to do it right. Check out Miller's 140-Auto Set machine for an entry level MIG. About as easy as it gets. I use the 180 all the time as it can weld thicker material and is a true 240V machine. TIG is a totally different animal and is not for the newby welder unless you're willing to sit down and practice. That said, once you learn it, you won't want to go back...