Picking the right generator comes down to what you’re actually powering. Start...

https://wiki-view.win/index.php/Inverter_Generator_vs_Conventional_Generator:_What_You_Need_to_Know_to_Protect_Your_Gear

Picking the right generator comes down to what you’re actually powering. Start by adding up the total wattage of your gear to get the right size. Think about fuel too—petrol is usually fine for quick jobs, but diesel is better if you’re running it all day