I was wondering about that, as well. We were told NOT to use a Genturi on the genny exhaust pipe as it would not support the weight. The Aqua-Hot exhaust looks pretty much the same.
Like you, I try to be considerate of the neighbors -unless they're having a big, smokey campfire in which case it's "game on". ;) I also look for sites with no one close on the driver's side.
Ours AH seemed too loud and the smell seemed so overly strong that I had an RV tech check it this week. He (and his supervisor) both stated that's just the way these units are.