You may be gambling if you trust a standard GPS to navigate you to a campsite while RVing. Moving your rig to and from a campground takes a lot more than driving a passenger vehicle.
An RV GPS is similar to a standard unit, just for an RV. They factor in the much larger dimensions and weight of your RV when calculating a route.
Google Maps doesn’t have an RV filter that you can use to factor in the dimensions or weight of your RV.
Custom Routing Options RV GPS is for the custom routing options. These units can help you avoid sketchy roads, propane restrictions, and low clearances.
Cost Top-of-the-line models may do a great job and have many fancy features, but they can cost upward of $700.