Best AES/EBU

depends your system ,my choice is xlo limited edition.

There is no "best", there's only "best synergy"...for me it happens to be Purist (salve Albert) or XLO Limited. (greetings Adsal)

I agree with "no best". I have used Cardas, Illuminations Orchid, and AudioTruth Falcon. In my system the Falcon was the best followed by the Cardas and then the Orchid. If you were to do a survey on these 3 I would expect the Orchid would come out on top--which is why I bought one in the first place--but in my system it did not.

Yes, a cable that sounds best in one system doesn't necessarily sounds better than other cables in a different system, but when many systems are analysed, it becomes possible to find a cable that sounds better than others on the vest majority of systems - because of it's design superiority :-)

I have a Levinson front end, but preferred the Cardas AES/EBU to Madrigal's own digital cable.