I'm using the OFC cable, which to be honest is a bit too stiff and heavy for my liking so I might get an aftermarket cable. Norne or Viking Weave cables are looking gorgeous.
I'm getting very good results from 16 core 7N OCC black braided earphone cable from ebay seller audiograded. Seriously good sound, a bargain at the price.
Transparency and detail are excellent and without any HF emphasis or harshness or anything nasty at all. Just seems to do everything right. More expensive ones are likely to do this a touch better, but I doubt there is much in it.
I tried a similar cable from this seller with my Cayin N8 dap/Audio Zenith PMx2 setup and liked it so much compared to the standard Oppo cable that I got the one for the ZMFs.