Same old argument. Both of these are built on commercial vans that are basically designed to be driven for 200,000 miles in four years then sold to a builder. It doesn't matter that a motorhome can cost £75k. It's still a commercial van built for a limited life and they deteriorate very badly left doing nothing for months on end on a driveway. So for reliability, better to go for the one you will use the most: the camper.