An all GC system *may* be too warm, but it sure depends on system setup, components, acoustics and preferences. George Cardas is no dummy so it's likely there's a synergy there that keeps the sound from going overboard. You'd certainly be getting the resolution + a bit of added warmth with the GC spkr cables, but for the $$ you should.
I think the extra $$ for GC over GP would be money well spent given what I perceived of much greater resolution (GC vs NR ICs) vs no greater resolution (GP vs NR spkr cables) and probably equal warmth over NR in both cases...
I can't recommend the Cable Company highly enough for auditioning esp the higher priced wires so you can be more confident about how things sound.
I think the extra $$ for GC over GP would be money well spent given what I perceived of much greater resolution (GC vs NR ICs) vs no greater resolution (GP vs NR spkr cables) and probably equal warmth over NR in both cases...
I can't recommend the Cable Company highly enough for auditioning esp the higher priced wires so you can be more confident about how things sound.