Looking for a Giant Killer Digital cable

This is a subject I am naive to and up until now my understanding was that data transfer using I2s and USB are the bases for superior data performance.
Currently I use I2s output from a PS Audio Direct Stream Memory Player to a Denafrips Terminator dac and speaking for myself to date I am experiencing the best most enjoyable digital playback in my home so far .

The I2s cable I use is WireWorlds platinum starlight their top HDMI cable which I found to outperform by a good margin PS Audios supplied Kimbercable I2s cable , is the WireWorld cable worth $700.00 I couldn’t say .

Anyway I find this cable subject interesting especially Audioengr comments and test results which got me to order his reference coax cable .

LowRider I never did use any other cable with the PS Audio player and PS Audio dac senior except the factory supplied I2s cable then later changing over to the WireWorld platinum starlight which btw is exceptional with video .
As you most likely know users of PS Audio components are well aware SACD playback via the I2s outputs the DSD signal with licensing agreements though some discs I have are detailed , smooth and inviting I have a pile of red-book CDs that rival sacd playback including DVD Audio and so called hi-res downloads that I listened to .
Changing dacs is a long story however currently with playback I’m getting a downsampled PCM version using the PS Audio DMP and Denafrips Dac at 88.2KHz 24 bit and with direct comparison between the two dacs the Denafrips easily surpassed the PS Audio dac for a much , much more enjoyable playback presentation , well that’s what I hear,..
Finally Im just curious to listen to a very good coax cable in direct comparison to the I2s .

BlindJim 
Like some I prefer physical ownership of my music and I guess I could rip my CDs and store my collection away however I don’t mind plopping a disc in a tray.
When it comes DSD , Sacd and jacked up music files sold as Hi-res music I’m highly sceptical of it well most anything the industry pushes I’m weary of .
Back to the subject I did manage to borrow a DH silver sonic coax cable and compared it to the I2s and found little difference with the I2s I’m hearing it in low level information and perhaps a bit more realistic sounding human voice and vocalist however that was just one evening of listening .