Long XLR Interconnect Cables

I am using Aesthetix Eclipse preamp with dual PS and Aesthetix Atlas Monoblok Signature. The cable is Mogami 3173 gold. It's what they called audiophile itch so I am thinking if it would improve the SQ IF I use a more expensive XLR long interconnect cable.

Thanks Al for your valuable input. Really great to have someone knowledgable around.