Too stiff is difficult to discern. How stiff is too stiff to you?
For reference, I daily my supra on 10k/14k FA510s and have gotten nothing but compliments on how compliant it is on the streets.
Preach. These big name wash companies are starting rumors that you have to use a pressure washer or even a clean wash mitt when washing your car. Save your $$.
Have you driven your car at 80 with the wind buffeting solutions? I promise you, theres plenty of exhaust and turbo noises to be heard at those speeds when you modify your car.
We don't keep garage / mileage queens. We're not saving it for the next guy.