I'm looking at the 6250w Champion on Amazon for just shy of $1,000. I need to add up the draw from certain appliances around the house, but our home generally has a pretty low power consumption.
RMP had the power off for 5 hours for "upgrades" today. I fired up our little a-ipower SC2300I genset from Costco.
It ran the Wi-Fi, fridge, garage lights and furnace. It is a sweet little unit.
We have a larger 9000W dual-fuel Champion that has been great but the noise and fuel consumption is pretty bad. It is the same model Jeeper has for sale. I wanted it for powering the entire house and have it set up with a quick disconnect hose for the houses NG line. A gen of this size is annoying to setup for a quick outage.
For the larger gens I've found it best to wire a plug and manual transfer switch right up to your main panel but that comes with its own potential risks.
We have a small generator transfer panel that is wired into our sub-panel to feed strategic circuits. Our transfer panel is old but there are many updated units available.
I've got 5 hours on the little Yamaha and added a magnetic dipstick and 5w-30 full synthetic oil.
I don't think you can go wrong with the a-ipower and maybe pick up a second so you can parallel them. They advertise 8 hours of runtime on 1 gallon of gas...that seems to be accurate.