To the OP. It seems like you are limiting yourself with those three welders you have listed. All those duty cycles seem low except maybe the Hobart. If you are intending on heavy use in the future, look at something in the range of 60% @ 200 amps. Nothing's worse than having to wait for the unit to cool down when you're burning a long pass.
The 252 Millers seem to be solid machines. In my experience, Miller doesn't make a bad machine.
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Nick J
'14 Silverado LTZ 5.3 4wd
'05 Cummins QCSB 4wd 48re
'91 Cummins w350 5spd
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