I went to the Motorshow at London Excel a number of years ago before I got a GS. They had a VIP area upstairs with Spykers, Zondas, Ferrari, Lamborghini, Maserati, Astons, Bentley etc, all available to sit in, open everywhere and appreciate. It was like a Willy Wonka car showroom, with Alcohol & Snacks on tap aswell. We had a very good afternoon there, whilst staying in London for the weekend.
I still remember sitting in the 599 they had on show, and was one of my favourite cars there, since it felt like it wrapped around you, and you became an integral part of it, which was very deceptive since it managed to hide its size so well. From inside it was very impressive, the quality, and the design flair, even without it starting I 100% loved it, even down to the rear parcel shelf. There is a noticeable step up from servicing a GS to a GTmc, and then again to a 599. If you can afford the car and to service it, and it ticks the desirable box, there has to be only one question/answer. Which colour! I would go blue.
With regards to being suited to UK roads, I am sure a few famous people have managed to prang theirs in tunnels in reverse etc, whilst checking them out at 30mph?