If it is just for the fridge/freezer, have you considered temperature storage as a backup rather than electricity?
I've seen some awesomely-insulated freezers with phase-change materials (okay, so it's packs of frozen brine or glycol) designed to go without power for extended periods, but something like that isn't as versatile as a genny. And if your freezer is already full of meat, you'd have to either get a bigger one to make room for buttloads of thermal mass, or somehow get your existing freezer's guts into a larger super-insulated box.
Short-term, it might be pricier than the Honda, but longer term you might win from maintenance/fuel, and it'd be an asset if you ever decided to take your home off-grid. (though you could say that about a generator, too.)