Opinions!!

@b_limo  had an interesting suggestion. FWIW, this interview with MBL might add to your understanding of their approach: https://parttimeaudiophile.com/2020/08/06/a-deep-dive-in-the-high-end-sitting-down-with-mbl/

I agree with Rodman99999 - stick with electrostatics / planer speakers- I compared my Maggie 1.7i to Martin Logan and stuck with my Maggies- better sound stage. I do not know your price range - but the Maggie 1.7i are only $2,200 new. The Maggie 3.7i are $6,500 new. Everyone complains about the base lacking below 50 hertz with Maggies - solution - add The Swarm (4 subwoofer array and the system comes with it's own Amp) - got a TAS Golden Ear award twice - cost $3,200.  This set up is worth investigating - especially in your large room.  

Just my two cents - Happy Listening

If you are looking for a big, wide soundstage, the DeVore Gibbon Xs would be another to consider.  

Joseph Audio Perspective2 is another fantastic option (or even the Pearl 20/20 if budget permits).

Thanks for all the input. Really appreciate it.
It looks like its down to Magico a5 and Persona 9h. Will let you guys know.

Check out the Dali Rubicon 8's for a large room..I have the 6's in my mid size room and they could go in a larger room to a point, but the 8's would totally be comfortable. Wide soundstage, bass is off the hook and the ribbon tweeters are smooth and sweet..no edge anywhere.