I know a lot of people have been buying the cheap Champion brand Chinese generators from Costco and running their RV's etc with them.
They appear to have Honda "knock off" engines on them and from what I have heard they seem to give decent service.
This is a cheap alternative and definitely not the cadilac!
Like most things Chinese, consider it to be disposable so you don't dissapoint yourself.
Try searching the RV forums, I think you will find more info there.
I have an old engine drive miller welder that also has a 3500 watt generator built into it, it powers my blower and whatever else just fine but pretty heavy to horse around to go to shows etc.
Back home we bought a 6500 watt Coleman around 10 years ago on sale at Walmart, like somebody else said, it's loud but it does the job.