The Meridian processor's has plenty of digital inputs both coaxial and optical you won't run short on these, the only missing piece is HDMI for the moment.

So the coax would work just fine or even better if you ask some.

I'll tend to save the optical inputs for "crappy" sources like tv-boxes, that gives some degre of elektrical isolation between them

My stuff G98DH, G68J, DSP5200 ,DSP5200HC, DSP3100 HD621,AC11 , REL Stadium 3 Squeezebox Touch, Pioner BDP-LX71 ,Humax CXHD 5000C