Firstly TyTyk, i'm sorry to hear about the keying, you have to consider that there some very jealous people around, it's not always senseless teenagers or vandals.
As for the repair, well lets be honest, it has to be done correct and ASAP.
Personaly i wouldnt use one of those mobile paint repair companies, ok for a small patch up job if the car is being tidied up to move on, but a brandnew RCZ, never !!
This has to go to a reputable paint shop with baking ovens ect.
How can a paint repair that is done outside in the open with minute particles of dust flying around compare to an extracted dust free, sealed paint booth and baking oven ?
Even the temerature outside will have an affect on how the paint dries and finishes.
Some of the paints used on vehicles these days have to be mixed and applied in the correct environment and in the correct manner , not mixed up with a stick in the back of someones van !
Get it done correctly and you will not notice the diiference, get it done cheaper and on your drive and you will always be sorry.