Wow, I have never heard anything but positive reviews about unimig, i own two and they work flawlessly.
I totally agree, but it was a general statement without going into specifics.
IMO TIG is a nicer process that results in a weld that requires less material to be removed and is softer and easier to manipulate with a hammer and dolly. I mainly use MIG where access to both sides of the panel is not possible or where appearance is not super critical.
Not the greatest welder in the world and mostly self-taught, but experience has taught me to TIG where possible
just my 2 cents, was not my intention to offend :-)