Cardas Golden Reference upgrade to what?

Hi.

My system currently runs all Cardas Golden Reference RCA cables between sources and preamp, and between pre and power amps. Never been an issue. Loved the Cardas full bodied and rich tone. Recent system reconfiguration forces the need to have longer RCA IC between pre and power. Good opportunity to upgrade or move onto something else rather than just a longer pair of Golden Reference. And if I can get a good deal on multiple pairs of IC, can upgrade all the other Cardas GR IC in my system also.

Any comments or suggestions?

I have tried AN-Vz cables and in my system they sound thin and with no body. I have some tried Cello String IC and although they have nice tone similar to the Golden Reference, they are harsh and less refined big time in comparison. I like the Cello better than the AN-Vz.

The following is what I have been considering:
Ocellia Reference (*)
Cardas Clear
Silent Source Musical Reference

Also considering, but less (due to price and less information):
Kondo LP, LPz - will cost an arm and a leg
Shindo - have no idea how they will sound

I have been recommended:
Basis Audio PSTT

* Anyone done a direct comparison between Cardas Golden Reference and Ocellia Reference?

Thank you all in advance for your expertise and advice.

Best regards,
David