Phono Interconnect

I have the PL Dialogue Premium HP. Before that, had the Prologue 2 WITH the same phono board option.

Considering your level of gear, (and its fine) I found just ordinary $25 video cables used for DVD players adequate(remember those 3 cables:red,blue,green?)The shielding required for video signals ensures quite operation. IMO, spending more for a very subtle, if any,noticeable improvement not justified.

If you decide to go up the food chain with a separate phono, THEN, drive yourself nuts like the rest of us wondering if you purchased "THE" cable.
Just my personal experience, until you start considering something over $500, the built in is fine.

Sam, proceed with caution. Particularly if you're expecting a WOW moment. Also consider a used phono amp that retailed for 1 k+.
Get it for $5-600. More food for thought-tubed to compliment the already. Fine amp and next level up cart ie LOMC.