Looking in the $6-800 range. Gas and LPG with electric start. All advice appreciated.
You need to determine your energy need first, and buy a unit that provides that, with a reserve. Then what other features you'd like, such as dual fuel and electric start. Do you want a quiet one or does noise not matter? Is this for camping, or as a home power backup?
This one is within your budget:
[ame="https://www.amazon.com/WEN-DF475T-4750-Watt-Portable-Generator/dp/B07M8FFS51/ref=sr_1_6?dchild=1&hvadid=78477762537170&hvbmt=be&hvdev=c&hvqmt=e&keywords=portable+electric+generator&qid=1609986330&sr=8-6&tag=mh0b-20"]Amazon.com : WEN DF475T Dual Fuel 120V/240V Portable Generator with Electric Start Transfer Switch Ready, 4750-Watt, CARB Compliant : Garden & Outdoor[/ame]
, but I have no experience with it. It's rated 4350 surge watts and 3500 continuous on propane, slightly more on gas. 3500 watts will run your refrigerator and enough lights to keep your house bright, and a small space heater, with a decent reserve, but I'd opt for at least 5000 watts continuous as a house backup, and preferably with 220 volt capability if you have a well instead of a pressure-fed municipal system. That will also allow you to have hot water. Most well pumps and electric water heaters are 220VAC.
This is a better generator, but costs more.
[ame="https://www.amazon.com/Generac-7127-iQ3500-3500-Portable-Generator/dp/B07H8S6L5G/ref=sr_1_20?dchild=1&hvadid=78477762537170&hvbmt=be&hvdev=c&hvqmt=e&keywords=portable+electric+generator&qid=1609987019&sr=8-20"]Amazon.com : Generac 7127 iQ3500-3500 Watt Portable Inverter Generator Quieter Than Honda, Orange/Black : Garden & Outdoor[/ame]. Same output, but only gas, but it is very quiet. I have a Honda EU3000is, that they compare the Generac to, but it costs over $2200 now. I've had the Honda for over 20 years, use it all the time to power my shop (lights, table saw, band saw, router, vacuum, and hand power tools). It's marginal for that, but does what I need. The Honda is quiet enough that when set outside the shop with the door closed, I can't hear it running from 10 feet away.