I believe the inverter generators also run more efficiently (longer run times) and produce cleaner higher quality power. However they are twice the price. Lastly I really like duel fuel generators - gas or propane.
It's obvious to anyone who's installed generators, these guys don't know much at all about generators - they must be AllState Employees trying to get attention from higher-ups to keep their dayjobs. Cute music to make it sound professional, but very weak "advice." What A Waste of Time!