I use a Pink Faun S/PDIF card (which has BNC and an AES/EBU XLR output). It is absolutely excellent (even with stock TCXO clock). However, the chipset they use on the card has problems with Intel platforms that use Linux (dropouts and synch audio problems). As far as I've been told, it is fine if you use Windows. However, I went with an AMD cpu when I built my PC because of this reason.
I considered i2s, but decided not to go with this because it limits the length of the cable to about 1 meter (shorter is better). Also, by choosing BNC / AES/EBU, I now have the ability to choose from a very large array of cables.
I considered i2s, but decided not to go with this because it limits the length of the cable to about 1 meter (shorter is better). Also, by choosing BNC / AES/EBU, I now have the ability to choose from a very large array of cables.