If you want a good digital cord, a Bolder Nitro w/Furutech Rhodium plugs and full Bybees (hot/neutral/ground) is excellent. But, that's getting a bit spendy. At the very least the Furutech Rhodium plugs on a Bolder Nitro works quite well on digital (or anything else that doesn't draw massive amounts of current).
The Furutech plugs are very, very tight fitting (the best I've seen). And the better the connection on power plugs, the less micro-arcing that occurs. The more that micro-acring is reduced, then less HF interference is introduced into the power. And HF interference is particularly noticeable when removed from digital & video signals.
