After evaluating a lot of options, we've decided on Honda's EU2000ia generator. The specifications, the simplicity of operation, the reliability Honda is known for, and its demonstrated efficiency made it an easy pick. We've seen them in action and they do a remarkable job. 15 hours of generation on 1 gallon of gasoline is pretty good (under heavy load you can still make 8 hours.... a full day!)
By selecting a true portable generator, we have the option of taking it off the boat if we need to. You never know when you want to go ashore on a desert island and want some power! ;) Or, you could be trying to escape from a hurricane and must go ashore where power may be suspect. Either way, we will be glad we have a source of power for things like radios.