Donn purty much nailed it. The Fox Mountain line has replaced the Nash line as their "lower end" 5er.
Both are well made, Northwoods uses employee incentive to encourage employees to "build it right".
I noticed that Fox Mountain has switched from "RV Queen" to "Full Queen" recently, I've also noted they have "ramped up" the appointments to the Fox Mountain recently.
They actually have ramped up the appointments to the Arctic Fox since we bought ours, and that is just two model years.