You can't beat a beautifully cared for swirl free black car. It's the best colour bar none if it's immaculately maintained. My previous car was a black TT and although I like to think that I really look after my cars, keeping it looking good became the most frustrating thankless task. No matter what you do (with the exception of machine polisher which I have no experience with), it is impossible to avoid swirl marks or holographs. I'd wash it at least twice a week and on occasion 4-5 hrs at a time, but as soon as it was washed a thin layer of dust would settle on it. 
As difficult as it was for me, I decided to go white for the GTI, my first non black car for many years. It is so much easier to keep clean and doesn't need anywhere near as much time spent on it which frees me up to do other things, most of which revolve round my 9 month old son.
I'm sure I'll go back to black at some point but I don't see it being for quite a while.
My previous metallic and standard black only really looked good once a year, thats about the cycle of me giving any of my cars some real attention, outside of that they could look pretty shabby.
But do agree Black is an amazing colour when pristine as Rebecca prove, but we all not Rebecca
My present white has been the easiest to maintain as two buckets and some tar remover had it looking pretty gleaming this weekend and between its next TLC it does hold up pretty well as the dirt coverage just dulls the white opposed to standing out for all to see and of course no swirls.
However, have selected the Lapiz and do realise that will have to up my game to keep the effect but having looked at pretty much all the R colours in the flesh it was in the end the only colour felt could choose being its signature colour for the R
My favourite colour is the CSG and if not moved to the R would have 100% selected it.
