Higher-rated and more expensive generators can be started with the push of a button. A good choice might be one of the units made by Onan or Honda. These are built better, run more quietly, and will last longer over time than an inexpensive unit. Gasoline-fueled units are more common and have a larger choice of watt ratings. The main drawback to gasoline-fueled units is fuel storage.
Gasoline is hazardous to store.
It is also dirtier, and the smell can be invasive. LPG-fueled units are cleaner and safer, but their main drawback is the initial cost. Consider your generator to be a permanent fixture. It will be more convenient if the generator is wired to one or more electrical outlets in your home. A transfer switch must be used when connecting it to a building's electrical system.