The biggest differences between towing a 5er and towing a car behind a class A.
It's raining cats and dogs as you pull into the rest area cause when you gotta go, you gotta go.. Do you get soaked on your way to the facilities (or to your trailer) or do you just walk back to the Facilities in the Class A?.
Easier to back into a campsite (After you drop the towed)
When you run to the grocery for milk, bread or .. cold ones.. 30+ MPG v/s what that F35 gets bobtail.
Biggest DISADVANTAGE of a class A.. If you do not do a lot of traveling this applies. They like to be driven, Just like a generator needs to be run 1/2 hour under 1/2 load every month, the Class A needs to hit the highway for at least 1/2 1 hour every month to maximize tire and engine and brake system life.