two main thing you want to be looking at in migs is duty cycle and feed system
duty cycle 0f 100A at 20% for a 150A mig is not very good esab kit is usualy pritty good it possibly is a unit for bodywork shops where control is more importent
a good idea to check an unkown welder is its how heavy it is an all copper transformer and choke waighs a ton compared to a part alloy wound transformer
as for feed systems eurotorch fitment and quality feed mechanism and motor is rarely on any spec sheet
saying that i have a real old sip 195 with eurotorch and have no trobble and get great welds out of it. it was a cheap flog on stop gap that came up while i was looking for a good set. sadly it was alright so it has stayed
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