First suggestion would be to try the “search” at the top of the page in the gold bar. This topic comes up almost weekly and there are some suggestion and evaluations in the list of threads that comes up with that search and if that fails try Google and best GPS for RV. There are some good critics there.
https://www.jaycoowners.com/forums/f...rvs-67698.html
The search bar can be difficult at times. This one was found by using "routing" for a search.
Personally, I have owned mostly Garmin for everything but find the phone apps work as well or better that most GPS.