I don't claim to be anything more than a hobbyist welder, but I'm a fool for specs.
Assuming what I read is correct, besides the dual voltage option of the Hobart 210 MVP vs. 115 only for the Miller, max material thickness rating is greater as well. (3/8 for the Hobart 210 vs the 3/16 of the Miller 140).
Duty cycles are similar for the 115v option (20% for both) , but you can supposedly run longer on the 210 if you use 230v, @30% duty cycle.
It depends what you are planning to work in terms of material thickness and how dedicated you are to prepping your edges with beveling and so forth how far you can take each welder. Hope that helps.
--Bb
--
My motto on building smokers: “It does not matter how slowly you go so long as you do not stop” ~ Confucius
Chose the millermatic. $450.00 got me everything you see and like someone just said, if I'm patient and do a good bevel job, it should be plenty of welder for me. I'm pumped! I'm pleased too because it seems like new and I have a dealer nearby if I have any trouble.