Just going to throw this out there, not that you already have several great recommendations, but I do have a 13,500 startup & 8,000 watt continuous 240v & 120v multi circuits/breaker protected Briggs & Stratton generator. Great on gasoline economy and it's not nearly as loud as my older one, the backup that I never had to use for this one that's used for our place when the utility goes out. All my sensitive critical electronic equipment is protected by APC UPS's and/or APC serge protectors. Electric start with trickle charger too. I run everything off my generator when the power goes out and have for days at a time, and I have had that generator for over 10 years properly maintained with no issues whatsoever. I also have another that is much older that I would use as a backup, but that one is generally used on construction jobs primarily.
Generator handles after opening the transfer switch from utility electric service:
Furnace or two A/C units during the summer months
2 regular size refrigerators
(1 newer, the other older) and one small unit inside my workshop
1 large horizontal deep freezer
Wellhouse & house sump pumps
Two electric 40 gallon water heaters, Wellhouse & house
All of our electronic equipment, including televisions & the entire WiFi network
As needed indoor lights in the house, including barn, cabin, wellhouse, outhouse and workshop - six separate buildings.
I have two LED Security Guard Utility Outdoor Lights, but only run one when I loose utility.
Explore Uninterruptible Power Supply (UPS) products from APC us. Search the Uninterruptible Power Supply (UPS) Range for high-quality needs!
www.apc.com
Even have the heavy duty extension cord that breaks out the 120v into the multi circuits that I very rarely use unless I was to use this on a job site for any reason.
Good luck Steve!