As it seems to be a used model you are looking for, let me throw another vehicle into the mix that you dont seem to have considered but its a vehicle I towed many miles with prior to my conversion to Shoguns. As you mention the Volvo XC60, Ill chuck in the XC70. Low mileage models of these can be picked up very reasonably. Its 4 x 4 through a haldex coupling, with the D5 2.4 engine it will pull all day. Extremely safe, very comfortable, and excellent level of kit and extremely well mannered with a large caravan on the back. It carries a load and a half too.