well I've had 3 caravans and have a monster luxury one atm.
What alot of you guys have to consider is the following:
Hitching and unhitching is a hassle
Setting up a caravan at the proposed site takes time
Big luxury vans suffer from fishtailing and generally try to steer the towing car/4WD
If you pull over on a deserted highway overnight, you have to abandon your vehicle to enter your van.......if you needed to get away in an emergency, you'd be stuffed.
Motorhome however has the following advantages.
No hitching or unhitching
Zero to minimal setting up at proposed site.
No issues with towing.
Pullover in a remote area for overnight stay and remain in your vehicle.......excellent for quick get away in case of emergency.
Tow a trailer with a small Suzuki Vitara (or similar) for daily commuting........trailer also allows you to carry generators, trail bikes, etc.