BTW, try turning down the treble a few notches (say 3-5db) on your CK10s guys and tell me if they still sound as transparent and fast to your ears as they do with no EQing. The reason I am asking is becuase bright IEMs usually give an impression of better transparency speed and even clarity than they are actually capable of producing.
I will try your suggestion, but not really sure what it will prove, other than changing the CK10 sound sig, of course.
Second, not sure about the Russians and the CK10s, could be the cold has affected their hearing. Just kidding, but I guess I am not willing to base my musical experience with the CK10s on what some Russians say about them. I guess my ears count more.
I think you are spending way too much time pondering these phones, and your expectation mindset may be way off the charts at this point. Just saying. You can always sell them.