I concur with
@Shooter86's assessment. When you become intimate with properly done EQ, you learn there is no magic to any particular headphone's frequency range that cannot be explained by the magnitude and phase versus frequency response (unless it is managing to introduce substantial "euphonic" distortions like might be the case with the YH5000se or original HEDDphone), and the specifics of how that headphone couples with your own ears. E.g. I've experienced the case where after EQing multiple headphones to the "same" headphones.com target, errors due to differences between the GRAS test head and my own ears caused the Meze Elite to have "sweeter" guitar tones, but at home, I discovered the midrange boost relative to my Arya Stealth and was then able to experimentally transfer the "sweetness" EQ to the Arya and the "clarity" EQ to the Elite. Before claiming that matching two headphones with EQ is not possible, acquire for yourself a pair of in-ear microphones and a means like a head-strap else tape to prevent their being disturbed, hence ensuring more consistent measurements, then use
that as a means for measurably matching the frequency responses. So far, the only things that I believe cannot be corrected by EQ are looks, earpad comfort preference and subjective effects (part of "presentation"), major differences in null/notch location and sharpness, distortion performance, and at least when limited to minimum-phase EQ, the transient sharpness, cleanness, and quality (contributes to "presentation").
So for existing owners of the Arya Stealth, I certainly recommend EQ. For folks looking to get an Arya for the first time, I do recommend the Arya Organic as likely being superior in build and giving a better unEQed sound, and maybe marginal improvements to the driver quality (distortion etc.).
Anyways, I will soon learn whether there are actual subjective and objective improvements between the Arya Stealth and HE1000se for me.