My understanding is that XLR is such a leap over RCA (signal quality, especially over longer cable runs) that even a decent but budget XLR will bring advantages over a high-end RCA.
The problem is that most vendors do not include XLR interconnections on their gear. i.e., the audio industry is dragging it's past behind it similar to a dinosaur dragging its tail. I've tried to go XLR, but even my high-end Ayon integrated has only 1 XLR and several RCA connections! My 3 month old Raven amp has no XLR connections. Bummer. Take a look at the coveted Atma-Sphere line: XLR XLR XLR.
