I’d recommend Joseph Audio Pulsar monitors for your size room. They are among the best imaging/soundstaging speakers available and will portray layers of sound if they’re in the recording, and they also pull off a disappearing act that bests just about everything out there.
Another lesser-known option might be the Boenicke W8 made in Switzerland and would also likely work well in your room as it’s a modest-sized floorstander. It also appears to have excellent imaging/soundstaging and has a rear-firing tweeter that adds to the openness of the sound, and it employs a 1st-order crossover that probably also contributes to the W8’s 3D imaging capabilities. I believe it’s around $7500, but you’ll want to add the optional Swing Base that contributes significantly to the sound, so that will up the price quite a bit. Hope this helps, and best of luck in your search.
Another lesser-known option might be the Boenicke W8 made in Switzerland and would also likely work well in your room as it’s a modest-sized floorstander. It also appears to have excellent imaging/soundstaging and has a rear-firing tweeter that adds to the openness of the sound, and it employs a 1st-order crossover that probably also contributes to the W8’s 3D imaging capabilities. I believe it’s around $7500, but you’ll want to add the optional Swing Base that contributes significantly to the sound, so that will up the price quite a bit. Hope this helps, and best of luck in your search.