I've got a Champion 4000/3500 "open frame" RV ready generator.(has a 30amp plug) It had some issues at first. Died on me 1,500 miles from home. After a couple trips to the shop it may be fixed. I recently bought 2 Honda 2000 inverter gens and a IPI long run gas tank.
Want to buy a Champion??
Watch sales on Smarter Tools 2000watt gens. They have Yamaha engines. COSTCO, Home Depot, Amazon, WalMart, etc.
2018 Ram 3500 CC LB DRW 4X4 Cummins Aisin Laramie Pearl White
2018 Landmark Oshkosh
2008 Bigfoot 25C9.4
2014 NauticStar 21 ShallowBay 150HP Yamaha
2016 GoDevil 18X44 35HP Surface Drive