Based on your request for a 500 watt 120v generator, I would recommend the following two options: The Ryobi 1200W Inverter Generator for R4859 is a great choice if you need a lightweight portable generator that's easier to transport. As an inverter model it will be quieter and lighter duty than some heavier options. The MAC Afric 3.2KW Inverter Generator for R12950 is a more heavy duty option that will provide stable power for longer during an outage but is larger and heavier to move around. As an inverter generator it runs very quietly. Both of these generators appear to be in the right power range for your needs within my limited search results. Please let me know if you need any other details on either option or have additional requirements you can share so I can help refine the recommendation. I'm afraid my search knowledge is limited but I'm happy to further discuss meeting your power needs within your budget.