My audio journey revolves around two keywords: Soundstage and imaging. My first real speakers were Focal Aria 926 (3 way floor standers) with Purifi 1ET400A power amp and RME ADI 2 DAC as preamp and DAC. Signal comes Flac, dsd or TIDAL via Jriver or Roon. I sold Focal Aria and had backup bookshelf's Sonus Faber Veneer 1.5 which were hooked up to main system. I remembered when I first played Sonus Fabers in small room they sounded unpleasant, but now with my living room they were surprisingly good.
I followed a New Record Day guide "L.O.T.S. Loudspeaker Optimization Techniques for Soundstage!"After moving the speakers around in the room along the guide, the soundstage really came alive, like never before - the tightly focused centre image, clearly noticeable positions between two speakers etc etc. Downside is that wife didn't allow to keep the speakers so far out from the wall.
My reason to sell Focals was to built a LXmini speakers designed by Siegfried Linkwitz. Now my LXmini is ready and they outplay my previous speaker by far. Soundstage is so satisfying, it feels that sound emerges from precise points between the speakers or it is like a wall of sound. With previous speakers, when source was playing only L or R side, I felt that the sound is directly coming from speaker, this is not a case with LXmini - the speaker just disappears.
In short. 2 take away point: follow the New Record Day speaker placement guide and investigate LXmini speakers.
I have the LXSirius (LX Mini's from the official store) with .2 sub and it's fantastic. I also have the 521.4 in the living room and the scale it throws is amazing, even compared with the LXSirius/Mini. I have measured the mini, and the wideband mid is nice but unfortunately there just isn't the detail without a tweeter. If you get the chance, build yourself a 521.4!