Sorry to pick you, but I'm rather bored of people thrashing the Ghost.If I want the Ghost I would just buy the 7 series.
To me, it's a great car for a simple reason. As a younger individual who takes some pleasure in driving, has a space hogging wife and a need for a bit of image, you can't do better than the Ghost really.
The S Class may be brilliant, but in a car park at a nearby hotel I can see 3 of them. So what if they don't have a V12, in the world of businessmen nobody has the time to look at the engine.
So you end up wanting a 7 Series but that's just as common as a Merc S Class. When you bump the price and go for the imposing stature and all the pluses the Rolls Royce chaps put in you get a better deal.
Therefore I think the Ghost is a great car, sadly its market is a pretty tight niche.