I'm surprised that you think that highly of buzz boxes that you would compare them to '57 Chevy's. :laughing:
I don't rate them quite that high. But like the old Chevys, they're durable, well made, and long lived. And since we're comparing these to automobiles, perhaps inverters could be likened to Cadillac's. The Cadillac's ride would be smoother,quieter and more comfortable with lots of bells and whistles. But in the end, both would be adequate in getting you from point A to point B.
I had an old Lincoln buzz box like yours about 30 years ago. They're a capable welder. It would be better if the DC were higher for thicker material. But the thicker materials weld fine on the AC side, just not quite as smooth, perhaps. I bought it at a garage sale and never had the need to repair it, so I don't personally know about having one repaired. But from what I've read, I don't think it would be so complicated that a person couldn't repair it themselves, if they ever had the need. I've heard that parts are readily available and there are no computer parts or other complications involved. I sold mine 10 years later when I moved and didn't have a place for it right then. I sold it for the same price I paid for it, so it didn't cost me anything to use it all those years. So like a '57 Chevy their resale is good. :laughing:
I agree that your Miller Maxstar is a fine machine, and comparing it to a buzz box is not a real comparison as far as smoothness, portability, and all the bells and whistles that the Maxstar has.
But the bottom line is the actual weld quality and strength. The ripples may not be quite as finite on the buzz box, but in the hands of a capable weldor, the weld will be more than adequate.
A real advantage to the inverter is how small and light they are. They make a big difference if you're using it in a small garage or shop. With the inverter you could just set it on a shelf, if need be.
For the OP,
I have a Hobart Handler, but not the 190. I've had it for several years and it's performed flawlessly. I seldom use it, but my son likes it and is always bringing projects over to my place to weld. I prefer stick myself.
I think Shield Arc has a good suggestion with the Hobart Ironman 230. I've heard nothing but good things about it.