Conrad Johnson ET-3 vs Premier 10/14 ?

Has anyone experience listening to the Premier 10 or 14, and the newer ET-3? I have owned a Premier 10 and loved it, but wished for just a touch more treble air without losing the rich midrange and lack of brightness/etch. I am not looking for the last bit of neutrality and detail. I am more into musicality and lower midrange energy is critical to me. Can't stand thin midrange or any brightness, but want my cake and eat it too... would like to have as much top end extension/air as possible without losing the foregoing! Any idea how the ET-3 might compare?

I listen to a lot of acoustic jazz and classical piano, but also old and new rock. System: CEC transport, highly modded Entec Number Cruncher (the old, good Entec brand), CJ MV-60 amp, Quad ESL-63s, pair of Vandersteen 2wq subs. Cardas Golden Cross interconnect and Kimber 8TC speaker cable.
Thanks for thoughts!