The deciding factor here is quietness, clean and stable power. They are ideal for Camping , RVing, tailgating, races, parties and more. These generators are compact and extra portable with technology that takes raw power from the generator’s engine and refines  it with a special microproccessors for a clean and stable power output. The power produced is the almost the same as the clean power that you get from you a/c outlet. They are very fuel efficient and have the added benefit of connecting it parallel to another generator to provide enough power for your needs.

Below is a chart of comparison of the best sellers portable inverter generators.