There are as many thoughts on this as there are RVers. I believe it comes down to the way YOU want to travel. When we went from a 35' 5th wheel to a small 27' class A we looked between the A's and C's. We went with the A for ease of movement. By that I mean it was easier for passenger to get up and move around the cabin i.e. bathroom, frig while under power in the A's. There was more storage in the A's than C's of the same size. Our style of camping is FHU so tank size was not really an issue. We did make a mistake on the size of class A however. We like to be gone weeks if not months at a time and the small A did not fit that need as well as we thought it would. So after a year we moved up to a larger 37 diesel pusher and could not be happier.
We use a tow dolly with electric brakes. Years (many) back I did a jeep 4 down and was happy with the way it all went together. Now with the way cars are made its hard to find something to down 4 down. Its even getting hard to find something that can be on a dolly. The AWD cars as an example can not go on a dolly, I believe.
Yes the dolly is a little more work, however I have not found that to be a big problem. Pull Through sites of course are easier but many times I have unhooked the dolly and wheeled it to the rear of a site. I went with electric brakes for a less tung wieght.
good luck enjoy the moment
