Wow.
I had to step back for about a week or so from my headphone listening... too sick to care.
Picked up my 2016 edition LCD-X for the first listen in a week, and wow. One forgets how ridiculously good these things sound. Especially with tube amplification.
Recently had the chance to audition the LCD-2 fazor, Focal Elear, MrSpeakers Ether Flow, and Hifiman HE-560, and I felt there was no really compelling reason to replace my LCD-X. Actually, the HE-560 for the price is surprisingly good. It might be my second choice, that is if you get one free of rattles. I never could. Every pair I tried always had some kind of resonance or vibration.
One day I will upgrade, but it needs to be significantly better than the LCD-X. So, that means eventually checking out Focal Utopia, LCD-4, or upper echelon STAX.