These cables do make a difference.
I went through a stage of trying a lot of different ones and found differences in presentation - Stans one being a good one..
I tried NVA, Gotham, Belden, standard interconnect and others.
Best one I found is the NVA Super Sound Pipe (by far), the best of the rest being the Belden 1649a, which I thought was a fair bit better than all the rest.
This was in my system, your milage may differ though.
I only needed a short length to connect DAC to my Squeezebox, so I could get away with a short length of NVA Sound Pipe.
I go the cable as a trade for my squeezebox linear power supply - probably would have stuck with the Belden if I hadn't.
AC POWER
Hardwired 10kVA balanced mains powering entire system
AMPS
Meridian 557 power Amp (Modded) / PS Audio BHK Preamp (Modded)
SPEAKERS
Wharfedale Evo 4.4
DAC
PS Audio Directstream (Modded)
TURNTABLE
Pro-Ject X8 balanced output via XLR / Ortofon Quintet Blue cartridge
PHONOSTAGE
Pro-Ject DS3 B balanced Input (TT and Phonostage powered by Pro-Ject Power box RS2 linear psu)
DIGITAL
OPPO 203 (Modded: Linear PSU, i2s output to Dac) - Roon Endpoint, HDMI input used for all things Streaming/ PS5 /AppleTV ... also good for movies apparently?
MUSIC PLAYBACK
Tweaked AP-Linux based Roon Server into Oppo 203 as Roon endpoint
Ipad Roon Remote.
Apple Music/ YouTube via AppleTV, fed to Dac via Oppo HDMI input/i2s output to Dac.
SPEAKER CABLES
Biwired: Duelund DCA10GA (Bass) Duelund DCA16GA (mid & treble) Duelund 12DCA used as jumpers (On "Blackcat Cable" Chris Sommivigo's advice - yup, even with biwire it sounds better - and it does)
INTERCONNECTS
All Balanced: Ghost+ recording studio XLR cables