Thought experiment, but maybe fewer objective, comparable justifications you have for making a purchase, the more likely you are to keep it.

It happens a lot in car purchases. People buy "every day" performance cars, only to sell them months later because the logic they used to buy the car no longer is enough. It needs to be illogical and unjustified for the compulsion to keep "upgrading" to stop. Because only then is it an uncomparable experience, like the event of purchasing it, the story behind it'd construction, the look, material and feel, and how irreplaceable it's special qualities are to you.

Audeze LCDi4's might an astonishingly expensive, DSP necessitated, iem ergonomic, open back prohibited, telecom wearing product, but I'd never sell it.

Incidentally, you have a qudelix or any other 20 band PEQ device, you can use my preset which is a modified version of havenlu's measurements on headfi.

CH: 0 TYPE: PEQ Preamp: -9.6 dB Xfeed: 1 0 Filter 1: ON PK Fc 21 Hz Gain 7.5 dB Q 1.000 Filter 2: ON PK Fc 50 Hz Gain 12.0 dB Q 0.500 Filter 3: ON PK Fc 52 Hz Gain -2.1 dB Q 1.400 Filter 4: ON PK Fc 380 Hz Gain 1.4 dB Q 0.700 Filter 5: ON PK Fc 860 Hz Gain -5.9 dB Q 1.800 Filter 6: ON PK Fc 1540 Hz Gain -5.8 dB Q 2.000 Filter 7: ON PK Fc 3200 Hz Gain 5.3 dB Q 1.700 Filter 8: ON PK Fc 4000 Hz Gain 12.0 dB Q 0.500 Filter 9: ON PK Fc 5200 Hz Gain 3.9 dB Q 1.500 Filter 10: ON PK Fc 8800 Hz Gain -2.7 dB Q 0.500 Filter 11: ON PK Fc 7000 Hz Gain -2.0 dB Q 2.000 Filter 12: ON HS Fc 1402 Hz Gain -6.4 dB Q 1.000 Filter 13: ON PK Fc 12000 Hz Gain -2.0 dB Q 2.000 Filter 14: ON PK Fc 12000 Hz Gain -2.0 dB Q 2.000 Filter 15: ON PK Fc 10000 Hz Gain 2.0 dB Q 2.000 Filter 16: ON PK Fc 2608 Hz Gain -0.2 dB Q 0.300 Filter 17: ON LS Fc 1303 Hz Gain -5.8 dB Q 1.000 Filter 18: OFF PK Fc 11300 Hz Gain 0.0 dB Q 1.414 Filter 19: OFF PK Fc 16000 Hz Gain -2.5 dB Q 1.414 Filter 20: OFF PK Fc 22000 Hz Gain 0.0 dB Q 1.414.