Best alternative w/digtal inputs to Ayre QB-9 DAC?

I recently tried an Ayre QB-9 dac in my system and was very happy with the sound. I found it very musical with nice detail (for my taste). It was a big step up from my modified Transporter. I am looking for a DAC with similar performance but having a digital input I can connect to my Logitech Transporter (coax, BNC S/PDIF, or balanced AES/EBU digital output). My family (wife) is very happy with the interface on the Transporter (via the Duet remote) and we have no desire to switch to a PC or mac source so the QB-9 is not an option. My price range is up to $2500 on the used market. Thanks.