I use TIG exclusively. I did a lot of research with many different sources, including different books and several different metal shapers. The consensus of all the research I did was that TIG was better than MIG if you were a good welder. TIG is harder to learn because you have to coordinate the action of the welding rod and the welder. The TIG was considered to be better because you can control how much metal and heat goes into the panel better than the MIG.

I personally started out with a MIG, and switched over to a TIG. I found that the MIG usually put too much metal in, and sometimes would not fully melt the metal. I switched over to the TIG and had to redo some of the stuff I did with MIG.

I recommend TIG.