I'm going to mention @dgarretson the US rep to see if he would like to chime in.
So I finally had the health and energy to rebuild my crossovers. Hopefully this trend continues! :) Also I am relying a lot more on barrier strips, so future updates or comparisons won't require as many tools.
As a reminder, the crossover I am using is a 3rd order high-pass filter going to a Mundorf AMT tweeter. My previous caps were clarity MR, the large one bypassed with Audyn TC. My comparisons are the BARE CMR vs. the MR + Audyn. As I mentioned, my health and energy are a factor, so please, no criticisms that I didn't go through a long QA eval process.
Anyway, I find the CMR caps interesting indeed. They are cooler than the MR+Audyn TC caps for certain. From the contact/surface sounds of large drums, to cymbals and top-hat there is noticeably more information there.
In this sense it is definitely moving towards the Mundorf Supreme line, without it's juiciness.
I learned recently the MR caps are still around and honestly I can see why. The difference is bigger than merely more detail, or smoothness, it's a noticeable change in overall temperature.
The full rebuild just happened recently, so I'll see if I adjust. At first listen, it's a mix of pros and cons which I'll have to spend some time getting used to.
Best,
E