I have had 6k's and heard 8ks many times.

I can tell you that the Trinnov/Devialet combo with the Wilsons/Magico/Vivids/whateverhighendspeakers will be a revelation.

HOWEVER the trinnov is the real jewel in all this ... what I would do is use a Trinnov for the 8k's (in the digital domain) before trying passives and a Devialet ... The ST2 model would be ideal

Roon/Tidal, SBT, Trinnov ST2 , Twin Devialet D premiers, Vivid Audio Giya G1 Spirits, dedicated and treated room.
Meridian gear: 568.2mm and DSP5000's acting as TV speakers.