I've thought about it, but never did. There's only been a few instances where I live that the power went out long enough that I would have made use of one though. If I did get one, I'd want a propane one, so it burns cleaner and overall don't have to worry too much about it sitting for a long time before being used. But when you go propane you're now in the standby generator territory and they are more expensive. There's natural gas ones too, but I think I would go propane as it's a bit more "off grid". If something large scale happens and natural gas AND power is out then I'd be kinda screwed.
Solar panels would be my next idea, problem is, ironicly, freezing rain. The ones on my shed are out of commission for the year as we got freezing rain in early December and now they are just caked with this crusty/icy snow layer that can't come off. They are producing just enough to keep the battery trickle charged but it would not run any serious load. If I had a bigger property I'd just put up a vertical array with awning to protect from the snow and rain.