I bought a MM 211 a little over a year ago. With a filled 125 CF tank, cart, spoolmate 100 out the door, the price was $1,544 from our local Airgas dealer. I wouldn't buy a welder over the internet, but they matched a price I saw on the Internet.
I have only used it in the 240V mode, but I bought it for it ability to run in the 120V mode and it's portability. I am very pleased with it. Despite what yomax4 said, it is a true autoset. However you may want to set it up for yourself (tweak it as he said). I have found the autosettings OK. I really like the machine. I bought it primarily for making metal sculptures but I use it for everything that needs welding. I don't use my stick welder much anymore
I don't know anything about the Hobart machine. I didn't consider it. My experience is primrily with big (3 phase) Miller and Lincoln welders so those were my choices and I am not a fan of Lincoln. Just so you will understand the relationship correctly, Illinois Tool Works (ITW) acquired both Miller and Hobart in the 1990's. They represent about 9% of ITW business. Miller and Hobart had been successful operating companies before, and when they were acquired by ITW. They have both been around longer than ITW. They were competitors before the acquisition. There operations are in different states. ITW is a company that likes to expand by acquisition. There are some commonalities between the companies and since the MM211 is a new product, it is possible that they are made in the same plant as the Hobart 210. I own stock in ITW and it has been a fairly good stock to own.