AES/EBU in the Baetis sounds really good, ditto with excellent transports... or QED, as they say. It's just that it's expensive to get an excellent transport, not much different than doing so many other things audio right. As you know, I will continue spinning disks as well, until there is something better - and that has yet to come.
Not claiming that it's as good as your Spectral transport, but my Simaudio Moon 260 DT transport *) has now shown very high resolution in two different systems. It costs only about $ 2K . My MIT digital cable (AES/EBU) that connects it to my DAC costs about the same .
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*) image shows version with built-in DAC