Our 2007 Casita's AC was awfully loud. It was either low loud our high loud. Our Escape I think is much quieter on low, and quieter on high.
However, we did get a complaint from a camper next to us last summer, asking we not run our A/C at night the next night, as it kept him and his family awake in their hybrid camper. So I guess if you were to ask him, he'd say the Escape AC is intolerably loud.
I won't even start a debate on whether campers without AC's should hold everyone to the same standard of camping that they do or do not have. Especially when it is in a private campground where there were sites in the popup section where only a few popups had AC, instead of smack dab in the center of a bunch of AC-loving folks. No, I wont start that debate!