I'd like to add a few points I think are worth noting. I have been using an 8 year old Yamaha inverter generator. It's 2800 watt continuous & 3500 watt surge. It can surge the extra 700 watts because it uses the starter battery to add extra power to inverter for surges. That will start-up my 13.5k ac every time.
Also my Yamaha & the Honda EU3000i (3.4 gallons) hold about
DOUBLE the fuel of the Preditor & Champion (1.6 gallons) I'm pretty sure. That makes a big difference to me.
Neither of the less expensive brands are as quiet. Also, an important distinction to me.
In the Detroit metro area I've talked to a very popular small engine fix-it place & they won't touch a Harbor Freight unit.
I'm glad every one has had good results with many different brands. I just wanted to bring up a few things that I don't remember reading in this thread. Good camping to all.