A couple of things..
When we were looking at both, we found the class A's small and cramped compared to a 5th wheel. Just our opinion so please hold the flames. Then you have to have a toad. And from what we have seen in our neck of the woods, I think there is a law that you have to be over 65 or even 70 to own one...
Moving around in a class A while on the run is not only silly but really dangerous. Ever seen what a 100+ pound body can do if there is an accident... to themselves and others ?
Regardless of the costs of either, I would look at and decide on a the floorplan first. Rv'ing is not an inexpensive way to live..it is a lifestyle choice so both of you should be happy in what you are living in..