If 2000W to 4000W is all you need, and quiet is what you want, then these would be my choice.
I saw a guy in the nearby casino parking lot last summer, and he just brought back 2 of them and the parallel kit. Before I knew that he was testing his generators, I approached the back end of his truck, to see what he was doing, I heard the faint sound of a generator running, and I was only about 20 feet away. They are quiet.
https://www.harborfreight.com/engines-generators/gasoline-generators/2000-watt-super-quiet-inverter-generator-62523.html