We were given a week's time so I spent around 6-7 hrs just listening to them casually before I really buckled down to gather my impressions. I'm happy to hear that you like them. I agree that they sound really smooth and enjoyable - to my ears it was akin to a tubed CD player that I once owned. I think if AQ made a few tweaks to the design, they'd have headphones truly reference-worthy in their hands.
Headphone Reviews and Discussion - Head-Fi.org
Doesn't sound like my Nighthawks. You say lush, I say smooth. After listening for a month now, I find them to be the best headphones for my music, jazz and classical, ever. They handle the Berlin Philharmonic with great aplomb and the Christian McBride Trio with the same musicality. As an amateur musician for over 60 years, I find them slightly warm, deep diving into the bass clef and faithful and detailed in the altissimo register where the screechy violins and piercing piccalos of other lesser headphones reside.
They are the best birthday gift I ever gave myself.