@kjl1065 , I have been using a Nuprime CDT 10 for the past two and a half years. It has an AES/EBU output (among several others), is very well built and performs exceptionally well. Some of the outputs are galvanically isolated and it offers upsampling to high resolution and DSD specs. I have not had any issues with it and highly recommended it at 1/2 of your stated budget. You should check it out:
https://nuprimeaudio.com/product/cdt-10/
Also, I do not follow your comments about possibly needing a CD transport with an AES/ EBU input. What digital information would you want to send to a CD transport whose only purpose is to read the bits off the CD you're playing and transmit that to the DAC? As to which digital output provides the best sound, you'll have to judge that for yourself based on the transport, cable and DAC.

