Record Player - Phono Preamp cable recs….

My very best advice is buy one with the understanding you can return it for something else if you don't like it.  Most mail order places give a 30-day return, which I think is a federal law. 

I have found cables are too system specific to make general recommendations.  Case in point: after spending nearly a grand on four different phono cables - from tonearm to preamp - the best ones were Blue Jeans, #1, and the original factory one, #2.  The three bigger dollars ones were noticeably worse, the music was more dead sounding, not alive at all.  The worst one was the most expensive, at $400 for a one-meter set.  I still have that cable, as I could not return it.  Hey! I will make you one heck of a deal on it!  :-)

I use Silnote between my phono preamp and TT.

I believe they have a return policy. 

Don’t knock that Blue Jeans low-capacitance cable. It’s everything I want and at that price worth a shot. No longer than you need to.

@whyrichard 

Vivid hallucinatory presence… 

Magic mushrooms maybe?

If I were you I’d probably just go for another pair of Fidelium interconnects as they seem to be working for you.  But for a cheaper option and given what you’re looking for I’d also recommend these used Acoustic Zen Silver Reference II interconnects that excel at neutral and natural detail/air with very good tonality (especially for a silver cable) and excellent imaging with an expansive 3D soundstage.  What they will not do is add warmth so if that’s what you’re looking for I’d go elsewhere, but at this price if they don’t work out you can easily sell them for little/no loss so very low risk to try and about half the price of new Fideliums.  Best of luck. 

https://www.usaudiomart.com/details/650236204-acoustic-zen-silver-reference-ii-interconnect-cables-rca-1-meter/