Tig or Mig panels

[CSArno]

Just looking at welders and wanted some input on what welding process works best. I have a big old Mig that works good on big stuff. In the past I have used a small Hobart mig welder that worked really well on panels (lost that one in a fire) Best mig welder I ever used was a Snap On. Could only "try it out" for so long..

Anyway, I am interested in getting a Tig welder and wanted some input on how well they work on panels. Would like to be able to weld aluminum also. I have never used a Tig before.
I have gas welded using wire coat hangers for rod though. Lol.

Thanks,
Chris