The Ford Explorer and Dodge Durango (late models) AWD are certainly towable. The FORD has a 65MPH speed limit and you should get out and start it every 6 hours. The Durango is a transfer case, so no speed limit or starting every so often. Both are nice and heavy, 5100 to 5500 appox. A Chevy Equinox or Jeep Cherokee would be just as nice, a bit smaller, and lighter.
I tow a Ford SHO and 2 Jeeps, a Wrangler and a Cherokee. (not at the same time) if anyone has questions on those specifically. I prefer 4 down, always. Such a good way to take a vehicle.
WW