Ok. Finally got my AGD Tempo upgraded to L3. If switching back and forth between the AGD and the Coda s5.5 wasn't such a PITA I would probably have a more coherent comparison (I also have 3 pairs of speakers I am switching around as well). But here goes: The Coda does have the sweetest highs I can recall ever hearing - smooth, detailed, refined. The overall presentation is slightly warm. The AGD, though, has a more liquid midrange with a better of delineation of space. Also the AGD has more grip in the lower frequencies - better definition of timbre.
I have not made a final decision yet, but as it stands I will likely sell the Coda.
My system: Aurender n200 > PS Audio DSD Mk II > Backert Labs Rhythm 1.3 > amps per above > CS Labs Caladan (will probably sell), Fyne F1-8, KEF Reference 1, and a KEF KC92 sub.