I should have commented on the wood vs aluminum frame part too. The wood framed trailers have fiberglass bat insulation that's just kind of set in place and often has gaps around it. Not to mention it can settle over time.
I believe that the aluminum framed, solid laminated walls block more sound, and in this particular case will be much better insulated. Along with that, the Outdoors RV comes with double pane windows which also contributes to blocking sound along with its superior thermal insulation properties.
