I haven't traveled as much as many on here, but what I've been doing is using RV Trip Wizard to plan the trip overall. Find RV Parks, pick a fuel station I plan to stop at, and a rest area if the dogs are with us, for each day of a trip. This does a good job of making it easy to find those things and giving suggested RV friendly routing (which I can tweak).
I can then print off a full itinerary, so my wife can make reservations at the parks.
Then, when it comes to driving, I use Garmin, recently switched to the RV1095, and have started creating a trip for each day in the trip planner. Start, destination, and the one or two planned stops along the route. I started doing the entire, multi day trip in the trip planner, but didn't like that I couldn't quickly see how much Garmin said was my full driving time for the day, or ETA to the RV park for that night. Maybe there is a way to see this info that I'm missing, but barring finding that, I just started creating a trip for each day of travel, which only takes a few minutes to setup, since I've already done the hard work in RV Trip Wizard.
Then, while driving, my wife is using Google maps as a sanity check/double check, and when there is conflict between Garmin and Google, we will discuss. Typically, I find Garmin is the better option, due to RV routing, but there have been a couple, specifically leaving RV parks, where Garmin was taking us out a different, and longer, way than we entered the RV park.