The PAD Dominus Ferox-version, is my choice.
About the length of digital cables. Some cable-makers say that because of the speed of the electric information/signal passing through a digital cable, the cable will not COLOUR the sound unless it is 1.5m or longer.
In fact ( words from manufacturer - not PAD ) the lesser the length of the cable - the purer the signal will be to it´s original.
BUT, this is not always the wanted thing. Colouring can be intended - or even needed for desired sound reference.
I´m not saying that this is the LAW, and in my own experience I´m not convinced...
Thus the length.