So back to the HEK talk...
I subjectively feel that the HEK is priced fairly compared to the other, more expensive headphones like the LCD4, Stax SR009 or the Abyss.
Above the 1000$ price mark [some may say even lower] I feel it is most about tonal balance and one's own hearing pleasure...
As all those headphones should be able to compete on a technical level, considering the price point and performance equity.
Would it be great if the HEK was around 1999$ instead? Sure! [And the trickled-down HEX will be] but I still enjoy the HEK more than anything else!
I consistently preferred the HEK over the likes of the 007/009, HD800, Odin, LCD EL-8 through LCD3 [liked the X most], Orpheus, Kingsound estats, HFM lower offerings [except for the HE6, which I will not judge as I have not heard it on an expensive, synergistic setup], Dharma [preproduction], both Mr. Speakers [though the Ethers at half the price are good value!], K812 [well... but the K7XX is amazing value though!], MyST Isophones, German planar prototype all Audio Technicas [have not heard the R70x], all Phillipses [X2 great value!] and everything else that I heard this year at Canjam London and in Germany. I have not heard either of the Sony R10s [:/] and I've purposefully avoided the Abyss [as Abyss lite is still out of my price range + I find it unethical to take off 1000$ by removing a cable, a case and a stand from the package... let alone selling a 2200$ [!] headphone cable -_- #nosupport]. I also have not heard the HEX or the LCD4...
Is it the best at everything? No, but ti doesn't have to be. Being great+ at everything I value without any significant flaws is easily enough for me as this is the lone headphone in my experience that is.
The HD800, HE90, Dharma and Staxes pull details better, but they don't do it for me in the bass presence and [lower] treble smoothness. Plus, comfort [on my head - HD800 + Dharma - good. Staxes - bad]
The MyST has amazing bass quantity but lacks linearity in the mids and treble clarity.
The LCDs do bass really well but they either lack treble extension [LCD2], treble smoothness [LCD3] or just have narrow soundstage [all]. Plus, both the MyST and Audeze are too heavy [the Audeze being particularly uncomfortable on my head].
The Odin I didn't like on first sight and listen. [and I don't find the price tag justified].
Cheaper HFMs are quite good in most ways, but they usually had at least one major flaw to my ears [400S - lack of extension on either frequency extreme, 400i - lack of treble extension and realistic decay, 560 - lower treble peak], though the 560 is realistically quite close and certainly my pick under a grand.
Mr. Speakers Ether are the best planar under 2 grands IMO, though to my ears it doesn't quite posses the imaging, detail retrieval and spaciousness of the HEK. Still, it is the other headphone that has no major flaws on my list, so it'd be my second pick for sure.
I value the following aspects a lot - bass [extension, tightness, impact], smoothness [lower treble especially], extension [subbass in the bass, air/treble extension in the treble], vortually sibilance free experience, smooth with good musicality and even and tonal FR, detail retrieval, precise imaging and separation, good soundstage dimensionality, comfort, long term listening enjoyment [as little harshness as possible]. The headphone also has to perform well with virtual surround sound [DH/SBX].
Above all, overall music enjoyment, while pulling as many details while retaining smoothness and without any abrasive peaks or dips. I do not require or want a headphone to be absolutely transparent or revealing as I listen to so many genres of various quality and mastering standards it simply would not go. I need a headphone that does not emphasize sibilance
So, yeah. The HEK ticks all the boxes. Wanting a high level of sonic fidelity, coupled with smoothness puts me at a difficult spot... Not many choices here