I know S.A. has them all.
But historically, at least in West Africa, the luxury cars of choice have always been Mercedes Benz or BMW, from the heads of state to the ones who could afford it. Now you see them all, Bentleys, Audis, Porsches, Range Rover etc.. rarely Maseratis

In my family, the well off ones, they all had Benz's.
My father had the 500SEL , my mother had the W124 250D Diesel.
heck, I even knew someone with 2 S600's, and a S320, in the 90's, when i lived there.
I am Ivorian, the current president official car is a S500, his personal car is a Maybach 57s. His daughters whom i attended schooled with drive around Atlanta in S550s.

 

Your clients will hate sitting next to the towtruck driver, so the Range Rover is out.

QP is nice, but not a car I would want to sit in the back of.

S600 really is the way to go. And if you have security concerns, the car can be armored quite easily.

 

Highway robbery

 

I'd go with the Range Rover. Plenty of space, seated up high, etc.

 

since the RR is out, i would go S600. it looks very classy and appeals to more people than the QP. it looks very business like and i i think the customers will enjoy the back seat in the S600 way more than they would the QP

 

Alll 3 are nice. But you can't compare an SUV with a luxury car, it's a different feel altogether. As far as compare the cars, well, I would have to say the Maserati by far. Reasons;
1 - not as common, so it will retaining value. has great record. has luxury and speed.
2 - Benzs' are a dime a dozen, you see them everywhere.

This is just my take on your question.

 

out of personal experience i use for business needs the S500L most of times,and the RR SC for weather/bad roads conditions-both do the job perfectly and in terms of safety,practicality,comfort,reliability and image
so just get both,the used ones should have dropped in price now the new versions been around for a while...

 

I've had issues with the rear legroom in the RR. Therefore the S600 it is. I know that the three you mention are the options but have you considered an ex-demo Panamera S or even 4S or an Audi S8 L (if available)? IMO, it's rear legroom is phenomenal.

 

buy the Maser and drive them in the front seat :P

 

It's the S600. I wouldn't feel comfortable being chauffeured around in a white Maserati... So from a passengers point of view it's the MB, no doubt about it. Not sure you'll be as extatic with the MB if you keep it for your personal collection - doesn't feel as special - but still, a great car.