I've been on the Ohlins R&T for about 8000 miles which includes maybe 10-12 track days. They are a great balance for street and track use and very solid in terms of build quality and reliability.
My only criticism would be the spring rate; I've switch over to 350/425 F/R and the car rotates much better. It also shows a better distribution of temps on a tire pyrometer. If I want to go stiffer in the rear (as @
dp1 is doing), I'd send them in for a revalve. When I called Ohlins about this, they said it would be $125/corner with a one to two day turnaround.