Ndeslions- for half the cost of one of your Furutech Digi Ref IIIs, you can upgrade your RCS PSU and get more details, more dynamics, more air, then any cable can provide.
Mr.Porter- I looked at your system, where do you use/need a digital cable?
If you're only running at 44.1K, there's lots of good digital cables, for 96/192k,I like Audience Au24 AES cable. With Audience's 30 day money back policy, they're definately worth a try.