Yes I agree. I have a tube system that runs both SET amps and horn speakers, and Stax SR-007s Mk2s.
I like the speakers for working to, and enjoying the bass that I can 'feel' which I guess is more real?
But for detail and immersing in the music, it HAS to be the Stax every time. I got hooked when in my teens
and had environment issues. Plus I couldn't afford great speakers, but I did have some decent Pioneer Electret
types that sounded very good.
So maybe it is not one is better than the other, it may be the listeners ability to connect with headphones. It is a skill
that not everyone can get into. Speakers are nearer to what we are used to hearing in real life. Headphones place
the sound in the middle of your head, and you have to re-assemble the soundstage.
On a sound quality level, I would say Stax will beat any speaker under 200K. The speed, detail and low distortion