I can buy a pair of Sanders Innersound Eros...

Just talked with Mr. Sanders on the phone... very knowlagable and kind individual. Helped me greatly with the ups and downs of the Eros mk1... I now know some cool insights and what to do If I get them... what I think is funny( not in a disrspectful way) is he felt my new Parasound A21+ would “probably” have enough power for the panels... lol. 500 per at 4ohm...

I have a single chair in my listening room....

Jperry is right.
They are spot on in terms of frequency response, but that flat panel is unforgiving of listening location.

Still sounds good off axis, but if you want the headphone like experience it can make your neck hurt. :)

I don't know in comparison to the ML speakers, but I have heard them and the sweet spot is small.

Read the part about reversing the phase relative to each other.

https://www.stereophile.com/content/innersound-eros-mkiii-electrostatic-loudspeaker-measurements-par...
Below figure 9.


Best,
E