That's a tough one. I went through that a couple of years ago with gensets. The cheaper ones are all too noisy to use anywhere near other campers. To get into the quiet ones, the price at least doubles or more. The one we were leaning towards was a Honda 3kw EUI model, if I remember correctly. Very quiet and Honda reliable. We ended up going a different direction and the Class C RV we got has an 4kw Onan built in generator that is also very quiet. Even with the quiet ones, you won't make any friends by leaving them running all night in a camp area.