That's a very good question. I've used my old Etys for onstage monitoring but possibly never in studio/ home studio.Do you think HD25 has more details then Etymotics? I like it's signature too, can HD25 compare with full size open backs like HD6XX or Sundara for example.
Etys are possibly flatter than HD25 with very good detail retrieval.
HD25 are not VERY accurate, they are definitely bass boosted yet very bright with possibly a touch recessed mids.
But they scale up like a crazy monster. With good tubes ( I have very good tube amplifier) they sound glorious albeit in a very small in the head soundstage.
Unless you're familiar with this kind of signature, you may not like this kind of energy in such a small headspace. It's kind of fatigue inducing.
But it's a freaking beast, Tracking and mixing acoustic drums is a pleasure in them. The mix sounds huge in monitors/ speakers.
They sound just polar opposite to the dark yet fantastic sounding HD600.
BUT this particular signature is an acquired taste, it grows on you.
I have a special soft spot for hd25. There are cans like DT880 ( 600 ohms) Aeon ( Dan Clark) even Sundara I have/ had with brilliant sound quality, but the all plastic hd25 is indeed special.
I've never bought very expensive stuff like 800S/ Focal clear, some crazy Abyss headphones ( heard them all briefly) But I've stopped buying crazy expensive headphones. 1000 USD is the limit for me now.