I am on my second Rand McNally. Sure it has warts as all gps devices do. I needed the new one because I broke the screen on my first one. The new model works great and has a few more improvements. For the money it is really hard to beat the features for an rver. Traveling along I can ask it to show me travel centers (truck stops), where I can easily get the train into the truck stalls. It pops up a list and I choose how long my bladder can wait.
The good news is I replaced the screen on my first Rand and it works good as new. Guess I will pop it into the toad because the built in gps argues with me and just does not play well. Those dumb voice commands units are pure garbage and you can't punch buttons while in route.
The Rand will show you campgrounds and even give you ratings and phone numbers. They really are RV friendly if you dig in to them.
I use the check list feature and it has kept me from doing some dumb stuff.