Any of the inverter generators are quiet. Honda seems to have the most fans here in this group as well as others. Yamaha, Champion and Predator all have differing opinions. I have a Predator 3500 watt with only a about 10 hours on it that is doing OK. It runs my 13.5K Ac and other appliances. Just have to be careful not to run 2 high draw items a the same time. I did have a rough idle issue but that has been resolved.
2016 Ford F250 Supercab - 6.2 - Equalizer 12K WD Hitch
2016 Ford F150 Scab - 3.5 Ecoboost HD Tow - Roadmaster Active Suspension - (Reluctantly sold and deeply missed)
2016 Jayco 28BHBE - Progressive Industries EMS-HW30C