Uplander,
In the RV World there is more to the decision of what generator is best for your use than the cost per watt output. There is not many things more annoying than a loud generator running next to you in a campground when there are quiet generators available. There is a reason when you walk through a campground that allows generators you see more Honda generators than any other brand. Many of those Honda owners will tell you they first bought a cheap generator but soon came to see it was not appropriate to run it around other campers.
Before you buy any one of the many cheap generators on the market try to hear one run with a load before you buy it. You may decide you don't want to expose other campers and YOUR FAMILY to the noise they make.
Jim