Best I know of, Honda/Yamaha, flip a coin. The inverter style are very quiet. I did have a Honda 2000 that did not have enough juice to start a large refrigerator unit. I learned a 2000 watt gen puts out 1,000 on each side to each 120 volt outlet. I upgraded to a 3000 watt with a RV style or single 30 amp outlet, it combines both sides for full power availability from one outlet, plenty of power that way.