Not all carbon rims are the same. Higher temperature resins cost a lot. There are some data out there. I was recently in the market for new carbon rim braked wheels and it came down to Zipp 404, Bora 50, and Farsport Ventoux. Zipp was out because of hub and body problems. Campy did not do as well as the Farsport in the braking destruction test and loose balls are slower than high quality cartridge bearings. I've taken my 200+ lbs 50 mph down 15% gradients and braking the whole way as in the wrong way in order to test heat build up. For me, I don't consider delamination an issue. YMMV.