I've owned about every gen out there at one time or another and none exceed the Honda 3k-is. The quietest gen out there except for the Yamaha 1000. Quieter than my Honda 2k.
Runs for like 20hrs at 1/4 load. I just leave it in the back of my pickup and all out takes is a twist of the key to start, no yanking on the rope for the wife. Electric start is great.
I much prefer it over my Honda 2k except for the weight although the smaller is a great little generator we use alot when it's not hot out as it runs everything except the air, but does run the air fan.
A lot of gens won't run the air when it's over 90 degrees out like the Yamaha 4kES I had. Some only run a couple hours before having to fill up again like the Champion I had. My Onan was good but noisier than my Honda and temperimental... My Generac 4k is a solid reliable generator but to loud.