$ 350 plus the possibility of shipping for the Longevity 140
$ 490 with free shipping on the 140 Hobart
$ 700 plus possible shipping cost for the Everlast Power I-Mig 160 , which is a dual voltage machine .
$ 850 with free shipping for the 210 Hobart
From what I know about the Hobarts , they have a " Tap " setting for power / voltage knob . In other words , it goes from 1 to 2 to 3 , click , click , click , were as my older Lincoln SP135+ is the " C " model . C is for continuous , so I can go infinite from 0 to whatever the highest number is and any were in between , thus to fine tune . The Hobart 210 also has " Tap " setting's .
The Longevity appears to be the same as my Lincoln , infinite adjustment , not tap setting's .
The Everlast I-mig 160 ( dual voltage machine ) that also appears to be Infinite adjustment .
I really doubt I would like the " Tap " settings , When I used my Lincoln 135 , Many times my settings were between numbers , 3.25 or 3.75 , etc... . Thus even though I bought a Migweld 200S from Longevity , ( a 220/240 machine ) , I kept my little Lincoln for those times I may need to be remote with a generator .
Don't Kid Yourself though , I Do Know that I have welded 1/2" to 1/2" with that little Lincoln using .035 flux core and it stuck . Obviously at that High a setting , the Duty cycle is very limited , But that project was adding 1/2" x 3" x 10" strips to a Semi truck chain Hanger to adapt it to pre-drilled holes already in frame . Welded both sides without grinding or tapering the joints , maybe a total of 24" to 30" total of weld that took better than a day to complete , ( was in no hurry as it was summer time ) , But that Hanger had over 400 pounds of tire chains on it for over 6 years straight traveling up and down the !-5 interstate from Seattle to Los Angeles without a failure or a crack any were . I really doubt anymore shock could of been applied to those welds than was applied when I would hit a pothole on the Grapevine and the entire truck would shake .
My Choice would be either the Longevity 140 or upgrade to the Everlast I-Mig 160 dual voltage to avoid the " Tap " Settings . I only ran / run Flux core , thus although I have welded 20 gauge sheet with .030 flux core , it was more like tack , tack ,tack , then go back and tack , tack ,tack and keep repeating until entire area was welded . Even .030 on the minimum settings were it would still arc , was enough to burn through thus that was a real time burner .
No Pro Welder , Not even Close , Just a Self Taught Hack that has used a 110/120 machine .
Fred H.