Any recommendations for aftermarket C-7 power cord for Bluesound Node 2i

I’m using the iFi SPDIF iPurifier as well between Node2i and dac. I have an upgraded Swagman Labs LPS and the sound from the streamer is so much better than a stock Node. Spacious soundstage, black background, more detail with smoothness in the highs.
A very worthwhile upgrade in addition to an aftermarket C7.

Another option to consider is getting a good quality C7 adapter; this gives you lots more choices for the cable.

I just recently sold my full sized DAC for an RME ADI 2 which uses C7 and then started looking for C7 cables and my list pretty much matched what everyone else has mentioned above.   I then questioned myself why I wanted to buy yet another powercord when my Shunyata Alpha Digital cable was now sitting idle so I purchased a  Cryo Treated C7 C14 Adapter from Take Five Audio and am using it with the Shunyata and RME with fine results.

Any thoughts on iFi and SPDIF coaxial cable quality? Is cable quality made irrelevant with the iFi?

@buschmann, the reclocking by the iFi sure helps reduce jitter, but not all SPDIF cables are created equal. 
The design, construction, length all contribute to sonic differences in cables; eg, soundstaging, dynamics, fast attack, etc. I've tried several cables with my CDP and Node2i running through the iPurifier, each was different.

So I guess I'm saying you get many benefits using the iFi by reducing jitter resulting in a smoother, more dynamic sound. So the cable probably is less important. So I went for the cable that sounded the best for my system.

WIREWORLD mini Electra is what I use.