We just purchased the Champion 3500/4000 generator from Walmart. We got the one with the wheels for $372 (plus tax and Walmart's new $2.97 delivery fee). It is "rv ready" with the 30amp outlet plus a couple of other outlets on the panel.
We used it for the first time while tailgating last weekend. It is not as quiet as we would have liked, but we were able to baffle the noise somewhat. The noise was tolerable and what I would consider not excessive when compared to others around us.
It ran our whole trailer very nicely.
