@onemadchemist I haven't heard the Ayon, but I had my Ref 6 upgraded to the SE late last year. My biggest observation was that the soundstage sounds more dense. I don't know how it would compare to the Ayon in that context but it was noticeable for me in my system. I also feel the soundstage expanded even further (well outside my room's boundaries) and, not that I ever had a problem with the noise floor on the regular Ref 6, the '6SE has individual instruments emerging from the blackest background I have ever heard in my system. I'm not wanting for anything more, it's a nice (if temporary) break from the upgrade itch.
FWIW other components are ARC REF as well.