well, i usually do not go for white as the paint looks thick and
i have this belief that it will turn yellowish over time and
exposure to lightings.
is that true? 
maybe if you are not collecting the white as a theme, you could try
those under the Dealer Edition, sold exclusively at PML Alexandra,
BMW showroom. the colours are unique and the models come with
number plates instead of the model type.
but currently, no stock for M5, which has only one colour -
interlagos blue. 
