Good thread.
It has been a pleasure to read it.
So how many miles has the car now ?
For your tires, if you still do a lot of tracks, I would recommend the Nankang AR1. They are really great and we see a lot of people doing trackdays with them. The only down side would be that they wear quite quickly. I do not know compared to the two you mentioned.
Cup 2 from Michelin but they are quit expensive as well.