I have 4200w HF portable generator. I run extension cords to the house from our shed. I work from home so having power during even short outages is important. I can run my furnaces, fridges and pc and some lights. I can't run the home AC, but I can run a couple of window units. The plus side of this is that my generator solution was cheap and it works.
The bummer is that our outages are almost always weather related meaning that I have to gear up to go out in a storm and pull extension cords around in the rain or worse.
I keep it full of stabilized gas and run it for 10 minutes or so every other time I cut the grass and every winter month. I cycle stabilized gas in several cans throughout the year to ensure I have enough on hand.
If I had the money I'd get a whole house generator. Saving thousands of dollars sounds like a good idea in good weather. Spending thousands of dollars on a whole house generator sounds like GREAT idea when you are pulling cords around, fueling and starting a portable generator in the freezing rain.