My Livingroom Benchmark gear is AES48 compliant. I very happy running relatively low cost Benchmark XLR interconnect between preamp and amp (both Benchmark). I have tried more expensive XLR's. On my sources that are from varies manufacturers I found that the interconnects matter. So there I use Audience Au24 SE and various WyWire.
On my office system, I have a KRELL amp and CODA preamp which I am not sure is AES48 compliant. I am running the 15+ foot Benchmark XLR between the 2. I am afraid to try any expensive XLR between them. My ignorance will save me money.