I have a Pro with Contourbloc and CAIR that I purchased used this year for under $500. I like it a lot and my instructor likes me in it a lot. I have no complaints about the CAIR panels so far and my horse seems to be going better than in her flocked and foam panel saddles I had prior. I don’t feel like a pogo stick; the only thing I notice is that it makes the seat kind of hard, if that makes any sense. But they are still comfortable to ride in.
I went with the CAIR because I was hearing mixed reviews on Wintec’s flocking from saddlers. Apparently their flocked models have a hard, tightly packed “sock” of synthetic material, which defeats the purpose of flocking. I’ve read online that CAIR can be replaced with true flocking by a competent saddler for a few hundred dollars, so if I ever have an issue, I plan to go that route.
Years ago, the 500’s fake leather was slippery. I did not enjoy it when I used one. But their material has been improved-- I have a new Wintec AP Pro (also with CAIR) that has fake leather on the back half of the flap, and it has a much better grip than their old material. I’m assuming new 500 Dressage material rides similarly, plus they added the grippy equisuede to the knee. I personally LOVE the grippy equisuede; it makes me feel like I have the best full seat breeches on no matter what I’m riding in.
I spent YEARS going through dressage saddles of all brands until I finally bought the Pro. For me, it is even a better fit than the Isabell because the seat is a bit more open.