I'd add the Winnebago Adventurer to the list. For each manufacturer, if you want their bet effort, you need to be looking at top model in the gas-chassis line-up. They are still built to a target price point, so won't be as good as their top-line diesels, but they will be better than the lower priced models.
Former owner of 2004 American Tradition and several other RVs
Home is in the Ocala Nat'l Forest near Ocala, FL
Summers in Black Mountain, NC