Audio Connection Question

1) Digital Coax (more bandwidth)
2) Digital Optical prevents ground loop humms from your cable system but has limited bandwidth
3)RCA's can't pass DTS/Dolby Digital, and your receiver is probably better at decoding than your DVD player (cheap DAC(s))

Agree with the above except at one point my 5 channel outs had better DACS than my reciever. I have since upgraded, but take a look at which has the better DAC ... If for example your DVD has 24/196hz DACs and your reciever has 24/96...then the 5 channel out may be the way to go. My previous DVD a Technics DVDA-10 could pass DD and DTS through the 5 channel outs.