Frankly, if Caldera comes within 90% of Susvara's resolution & timbre (which early reports imply it does!) BUT can be run without the aid of a nuclear reactor to drive it then ZMF is winning ALL DAY LONG.I think where you're hearing here, is that you're speaking without subjectivity. I know there are many that try to make audio into a subjective or objective arena, but for everyone the experience lies somewhere in the middle as to what we each personally enjoy.
I personally own the Susvara and think it's a wonderful headphone, and suits different moods than any of the stuff I've created. (edit: just as does the other headphones you've mentioned) It's fantastic.
Appreciate that you've tried ZMFs and found they weren't for you, hopefully you'll get to try the Caldera at some point and I hope you enjoy it. If not, I appreciate it either way!
I can't wait to hear for myself.

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