what's the most vital cable in a system?


I was wondering what IS the most important cable in a system if one was to rank them (#1 being the most important and so on)...A local dealer said that to him, a digital cable is the most important cable if your system calls for it....Well, my set up is a Classe CAP80 integrated, Epos ES14 on dedicated stands, a Toshiba SD1200 DVD/CD player, an MSB Link III DAC, and a Monarchy DIP jitter box. I use 2 digital cables with this set up - Canare digiflex and a Monster Video 2. I am thinking of upgrading the Monster digital cable...As for the rest of my cables, I'm using a Synergistic Research Mark II interconnect and Audioquest Indigo + speaker cables?...comments???
gemini
I would recommend that you upgrade all of your digital connections to true 75 ohm cable and connectors. You should replace all of your digital RCA connectors with 75 ohm BNC connectors and then use DH Labs D-75 cable with BNC connectors. This was recommended by Gary Galo in Audio Electronics. I have done this to several of my systems and the improvement is better than adding a DIP. The only thing that I have found better is to directly solder Illuminati Ohm Aha 75 ohm cable directly to the circuit boards of my DIP and processor. The sound is terrific, loads of ambience with a natural sound.
Gemini, try Monarchy's solid teflon core digital cable with your DIP. If you don't like it you can retrun it with no problem. I'm running it both from my transport to the DIP and DIP to my DAC (BNC outlet with adapter). I was really surprised at how good it is. Something to do with the teflon core. Actually replaced Transparent with it. There are two versions, one more expensive than the other. I went with the less expensive at CC Poon's suggestion. Less than $100 each.