You've had 9+ different 110vwelders and Klutch is the best of the bunch?
I had mostly 240 volt machines, and some 120 volt units.. Mostly Miller stuff there. Standard ,and inverter.. I could not list all the 240 units I have owned or used.. Hands down my favorite is the Sanrex/Thermal-arc MST-400/LM series over Miller, or Lincoln Inverters. I also liked the Esab/260-300,Miller Shopmate300DX chopper machines Very well. Owned them too..It's a combo of excellent wet-out, crisp-arc, great arc starts.,The klutch has those qualities even in the low rent units.. From what I have seen, and heard form some people I trust. The Miller 215 has those qualities I look for in a machine.. Although I will never buy one with my Thermal LM and Esab 160i, that does what I need/want in a mig unit..Even without Pulse of some of my other units. MK,and Lincoln stuff. Mostly short-arc quality, and good solid spray does most of what I would ever need..
Welded with many 120 volt units over the years. Like the Thermal-arc 131/ Lincoln 125 plus, Lincoln 140c, Passport plus..Hobart 140.others too.
My other friend bought a Klutch 140si, and really likes those machines too. He has tons of units over the years to compare too. We all got in on the Hobart 210 test unit years ago, and have a background on what is out there..
I don't own any China welding machines at the moment, but sure know some can be excellent units overall.