Cardas Golden Reference vs. Golden Cross

I currently am using a 4 meter, internally bi-wired length of Cardas Golden Cross speaker cable between my Audio Research vt. 100 mk. 2 amplifier and Merlin VSM-SE bBAM speakers.

i have recently replaced all of my Cardas Golden Cross interconnects with Cardas Golden Reference (RCA) interconnects.

Sonically, how would a 3 meter, internally bi-wired length of Golden Reference compare with my current 4 meter, internally bi-wired length of Cardas Golden Cross?

Is there an additional synergy to be gained by running all Golden Reference system-wide? Also, would a 4 meter run of Neutral Reference interconnect between preamp and amp be a significant compromise vs. an all Golden Reference set-up?

Thanks.

my system:
1) Sony DVP-9000ES (temporary); considering Meridian 508.24
2) Joule-Electra LA-100 Mk. 3 preamp
3) Audio Research VT-100 mk. 2 amp
4) Merlin VSM-SE bBAM speakers

All interconnects (RCA) are currently Cardas Golden Reference.

Speaker cable is currently a 4 meter, internally bi-wired length of Cardas Golden Reference.

Power cords:
1) source: Shunyata King Cobra v1
2) preamp: Electraglide Fatman Gold 2000
3) amp: Electraglide Fatman Gold 2000

All components are currently supported on Rosinate Dark Matter stands with supplied ball bearings.