My reach car is a lexus ls 460 and the 600 is a further reach than that, but out of the choices you gave, mercedes e class (bluetec imo). But at the end of the day I hate the poor gas mileage (you have to pay EVEN more for a hyrbrid/bluetec if you want to rid that problem), and cost of maintaining it. But rich folks dont care about that thus they can afford to indulge themselves in those types of luxury..