Sorry Brian, I didn't mean to use "Mr. Goodwrench" in any derogatory way. Actually I use Mr. GW when referring to a professional mechanic and not a Shade tree, backyard, driveway or grease monkey which infers the opposite.
It's bad enough tracking hundreds of welding configurations, I'm just trying to understand "Use Vs. Time" for evaluation purposes. There was a construction contractors auction last month with over 600 units and I was told 40 of them were the same you listed, just packaged differently. Prices ranged from $550 to $3050. Generators (prices) were all over the board with diesel dominating the 10 top models. I could likely find exactly what you want if I can get a list that has any play known up front. If I have text message short-hand to work with, than things can get frustrating for the searchers. Substitutions must me known as well as hrs. used.