Out of your choices, the mog is the only "true" 4x4. Off road none of the others vehicles could compete due to the mog's locking diffs, ground clearance, and articulation. The mog is big and slow, but if you need a vehicle that can handle very rough terrain and carry large loads, that would be the best choice. Do you have Pinzgauers, Volvo C303s, or Land Rover FC101s out there?