Be interesting to see if they make a significant improvement.
I know the standard brakes on the E55K, despite being 8 pot at the front, were shyte under anything reasonably strenuous.
I can remember cooking the brake fluid on a runway day and they faded rather quick at the best of times - not that I used them that much.
However, the CL has another 200KG on the E55K and I think the one time I stopped the CL from a reasonable pace, they were even worse!