That's why I'm jealous of people like Matt Farrah, who get to show up at all these different race tracks and drive a different car every week.
On another note, how do you like your Carbotech XP-10 pads? Do you drive them on the street or just the track. I've been running Stoptech 309 pads for street/track duties a while now, but they do take quite a bit of pedal effort as you brake later in braking zone. I'm considering going with either XP-8 or XP-10, but trying to decide if I'm going to swap them for trackdays. Then there's the debate about two pad materials on the same rotor, etc.