If you like the sound of your Eidolons then you might like Salk SoundScape 10s or 12s. They have the same midrange driver as your Eidolons and flat tight base to 21Hz and 18Hz respectively. They can be run with a closed or open back. The midrange should be somewhat similar to your Eidolons with the closed back. When you open the back, the music just blooms with a beautiful live sound.
Bob
Bob