As lswing said if you have access to a good independent tech hold on to it. It is a unique car and I think it is the best representation of the already great C5 design. It is unique in its own subtle way and much better resolved than today's new car design language with the gaping front grills.
A biker actually gave me a thumbs up and asked if this was a special edition Euro only model. You might regret it once you let it go. I regretted selling my 6 speed Stage 3 A6 2.7T (complete sleeper) but I more than made up for it with the RS6 which is so much more car.