Maybe I'm not too attuned to these things, but I don't really see much difference in materials between my Utopia/LCD4/Susvara. Maybe I would need to look more intently.
But as long as it's sturdy, I am not concerned. Sound is everything to me. But that's just my outlook, just personal. And the Susvara sure is sturdy.
And the sound! OMG.
I actually find the Hifiman significantly more comfy than the LCD or Utopia. And I have pretty big ears that stick out. I'm 6 feet tall with a fairly large head. Again it's personal, but for me, the HEK and Susvara are tops in comfort.
And if you look around just a little and ask, there are good deals on the top Hifiman (and other top-end) phones.
I had the original HE6 and it was too shrill and aggressive with me and my headphone amps were struggling. The Susvara and HEK are fine with regular headphone amps.
(I was almost scared away thinking I'd need a speaker amp, but this was not true. It seems about the same as the HEK in this respect. So no problems there.)
And again, repeating, the sound is worth every penny to my ears.