Your set of generators presumes that you’re home when the power goes out. I truly want a standby system. I am often out of town. We are often out of town together. It has to provide power to run essential circuits, it has to switch automatically, and it has to last several days.
If the mitigation for the power failure requires me to be there, to purchase, store and manage fuel, to run extension cords, to start the generators, and then to refuel them, it is a complete fail for me. A pointless waste of $$. That’s why I don’t have a generator.
The only systems that make any sense for my situation have automatic switching, and continuous fuel. Mrs. Astro isn’t going to be wrestling cans, trying to refuel a generator when our entire yard is submerged. Where do we put the generator during major coastal flooding, when even garage will get water in it? So…where…the deck? The porch? Pointless. CO poisoning and noise add to the reasons to avoid the whole generator mess.
Powerwall? Auto switched. Recharged with solar. That checks every box on my requirements.
Standby generator running on natural gas, built on a platform above the water? That checks every box on my requirements.
But cans of gas, generators, and power cords? Hard pass.