I towed my Argosy Minuet with a 2011 Grand Cherokee V8. Can't really complain about it. Quiet, handled well, good power. The V6 works hard when towing, much more than the Hemi. Comfortable seats, nice interior, annoying complicated touchscreen radio. Brake controller is plug-and-play with the tow package.
Keep in mind that you need to buy all the options (Quadradrive II, an off-road package, and the optional air suspension) to max out the off-road capabilities. That stuff isn't standard. Also watch the payload numbers to make sure they can carry the tongue weight and your passenger/cargo load.
If the off-road capability isn't a big deal and you want more room inside, the new Dodge Durango will be basically the same platform.