We have similar taste coolraoul. I have a special fondness for those old limousines too.
But I would still choose a SWB 600 above them all
Ah, the W100 600...Air suspension; hydraulical glasses, seats, and central-locking (hydraulical and not electrical to allow it to operate silently!!!)...

Central locking and electrical antenna were firstly mounted on this car I think.
Even the emergency-tire was mounted on a ressort so that when the chauffeur came, the tyre was lifted and easier to take outside the car...
Really wonderful car. But why SWB? The LWB is beautiful too!
AMG has recently tuned up a W100, with driver air-bag, alloy wheels, the 6.3 AMG V8, and Nappa leather on the seats...

(as they did for a 300SL Gullwing, with horrible rims, horribles morrors, the AMG 6.3 V8 and so one...

) Even the AMG man said it was a pity....
This W100 would come close second behind the Phantom V for me, it is really a masterpiece of a car.
The Daimler DS 420 is wonderful too. It was hated by the chauffeurs because all the place in the car was for the rear passengers and the place for the chauffeur was too small, not comfortable at all

...
I love these 60's cars...