Well i should be getting my RS6 tommorrow, its the saloon version

Now apparently only 450bhp so who is the best to get a remap from? I have the EVO setup here so is the MSD map going to be as good as the others (will cost me a fraction of the other folks maps!) ??? Will i notice 50 extra hp on this car?
A bit worried about the repair bills

BUT you only leave once and it comes with a years warranty but still worried
I have not driven it yet or even seen one up close i have impulse bought

Will i be impressed by turning Audi? I wasnt that impressed with my M5 V10 as it was a pig driving slow, having to rev its tits off to get it going, the tuned SL55 AMG i had was superb in a straight line and for posing. ?????