I am a Miller man, myself.
I, personally, would skip the Dialarc, as its really the most basic.
I would be looking at old syncrowaves, aircrafters, 330's, or any of the dynasty's or diversions.
The old transformer machines are reliable, but they ALL have electronics in em till you get back to the early 80s. A mid 80s syncrowave still has circuit boards.
So if you really want to avoid electronics, you need to be looking at 40 year old or older machines- and then you get into issues with failed capacitors, rotten wiring, and oddball connectors.
Whatever you get, make sure it comes with a working foot pedal, and a water cooler- both are expensive separately.
The really old 5 pin Millers, or the even older 2 connector foot pedals, can be over $350 for a replacement pedal, and are as rare as hens teeth used.
New water coolers are $800.
So you are not "saving" if you find a bare bones tig machine for $400, versus a fully kitted out one for $800.
A new torch, on the other hand, is under $200, and the new ones are really nice, especially the swivel head versions.
Personally, I would really steer clear of old Linde/Esab/Union Carbide machines- they are notorious for almost complete unavailability to get parts, and there are a lot of really oddball LInde orphans out there.
I am not a huge fan of Hobarts and Century welders either- they are the budget lines of Miller and Lincoln, respectively, and are "value engineered". Means cheaper components.
Stick with Miller or Lincoln, and you will be much happier.
