Lee recorded a pretty astonishg number of fine sessions this century. SOUND OF SURPRISE, SOME NEW STUFF, KNOWING LEE, COSTUMES ARE MANDATORY.
That said, some of my favorite later-period Lee can be found on L'AGE MUR (Philology) from 1997, a reunion with Enrico Rava. Incredibly supple support here by bassist Rosario Bonaccorso, and drummer Massimo Manzi.
https://www.discogs.com/es/Konitz-Rava-Quartet-LAge-M%C3%BCr/release/2854381