Ah i know what stretch you are on about, unfortunately i dont test my car on that road as i ahd a friend die on the corner next to the post hotel, Ardoe house i think!
But i know what you mean, just watch out for the falling leaves towards the end of summer, jeezo they are slippy!!
My recommendation is the Stonehaven to Banchory road, it's enjoyable, you been on it? It has all sorts, 90 degree hairpins, long flat twisting bends, crests, tricky downhill bends, and best of all there is a bar at the end where you can quench your thirst!!!!
Best race i have had is the BMW 325I, he was trying everything to keep up, he was banging on the steering wheel and everything, ha ha! that was from specialist cars right to portlethen past Loirston Loch, the amount of people flashing and beeping was hilarious! anyway enough childs play! what mod's do you have and recommend?