Tow Vehicle
With a caddy, you have to park the caddy somewhere and lock it up so that nobody will steal it. You also have to take the car off before you back up more than a few feet, and most people have to remove the dolly as well because it is so much narrower than the Motorhome that you can't see it until you've almost jacknifed it. Towing on all fours requiers some wiring on your vehicle and a vehicle that can be towed on all fours. Most all fours toweds are stickshift, there are very few automatics that can be towed on all fours.
