I would consider that the additional IEC connectors needed for connection have just as much if not more influence than the wire itself so you may be setting your expectations too high wrt this.I am just gonna get a pig tail that matches exactly what I have, so there should be no sonic difference...only the enhancement of the SDFB.
Tom
I have two SDFB’s. One for my amp and the other to a well built/designed power strip that has four identical LPSU’s plugged in to it….(all power to computer audio)
I use Virtual Dynamics before and after on the amp and Audioquest Hurricane before/after on the power strip.