The OLD Hobarts were top notch machines, but weighed a TON, if one man can pick it up it is not one of the goodies
I have owned and welded with Hobart, Miller and Lincoln, engine driven and plug-in of the MIG, TIG and Stick varieties - I am NOT a qualified welder by any means, just a hobbyist.
For stick I prefer a Lincoln, I have never figured out why, but they just seem to weld better than the Millers I have used, Including my current Thunderbolt XL 225 AC/DC.
My former MIG rig was a MM252 and it was a MONSTER, as others have posted tho, NO WIND or no weld

MIG just does not perform well in the wind, even a slight breeze will cause you fits, yup that includes your shop fan
I have never settled on a TIG rig, but based on those I have used, if two people or fewer can lift it I don't want it. Brand does not seem as important here as weight, really do not understand why other than that old copper really does a good job.
Having gone around the block a couple times on welding rigs, I have settled on an engine driven for stick (lots of fencing to keep fixed) and a suitcase for stick/tig in the shop. When I find an OLD Hobart or Lincoln engine driven I will buy it, then replace the Thunderbolt with a suitcase. I am done with MIG because I do not want to deal with the bottles or whips any more.