I vote for a low profile small "Class C type" 4X4 rig - such as a 4X4 Tiger on a SRW (not a dually) 1-ton chassis with no lift above what's needed to clear larger than stock diameter tires.
TC's have too high of a center of gravity when taking into account the placement of their heavy items such as batteries and tanks. A Tiger has a lower center of gravity, as it's heavy items are mounted down closer to the truck's frame. To make matters worse, some 4X4 TC's are even put onto unnecessarily high lifted trucks. Gross frame lift is not necessary - large tire diameters are what's necessary so as to gain suspension/drive system clearance while at the same time keeping living area weight center of gravity tucked down low as possible.
Also, twisting of the living area structure is a no-no. The living area should be isolated from any truck frame twist so that the living area floor is maintained in a plane. Some Tiger models offer this isolation and some don't.
Note that some Earthroamer models are mighty tall rigs ..., with a lot of heavy construction up there in the air.
