Take a very serious look at the Yamaha generators. My research indicates that they are just as reliable as the Honda, just as quiet, and have a couple extra features that the Honda's don't. Such as a fuel shutoff. While this doesn't sound like a big deal to start with, what it allows you to do is run the generator "out of gas" and empty the carburetor of fuel simply by closing the shutoff. This is the best way to avoid the carb getting gummed up with old gas over a long period of disuse.
There are also adapter kits that will allow you to convert generators to dual fuel. Rather than having to store and haul gasoline, you can run them off of LP gas, which is easy to haul and store for long periods of time. While I have no experience dealing with them, US Carbureation seems to be the place that has kits for most any manufacturer. They are also a licensed dealer of Yamaha Generators and will sell new Yamaha's with the conversion kit installed, so there is no concern re voiding your warranty.
http://www.motorsnorkel.comWhen the money fairy stops at my house, a Yamaha 2400 is near the top of my list.
Glen