Which is best? Which is better on road/off road/luxury/comfort/status etcLand Rover DiscoveryLand Rover DefenderLand Rover Range RoverCadillac EscaladeLincoln NavigatorHummer H2Mercedes G55Mercedes GL500BMW X5Lexus LXToyota Landcruiser (the big V8 version)Audi Q7Bowler NemesisPorsche CayenneJeep Grand CherokeeNissan Pathfinder