Hi I"ve used Golden Cross and Golden reference before. Then went to Transparent Ref w/XL-major improvement in the areas you're asking about. Currently using Purist Audio Designs Dominus Ferrox (sold a bit ago) and now Purist Proteus Provectus Praesto...which is the best I've had so far.
I can't stress speaker placement and room tuning enough. I just left a friends house on saturday, he had wilson watt puppy 7s, all Cardas Golden Reference cabling...full set of ASC tube traps and a Rives Audio PARC. Killer killer good bass deep, tight, powerful with clarity...
I wish I could say the Transparent cabling will be perfect, I think it will help, and help a lot. But so would the better Cardas cabling, Purist and several others...Transparent has a try before you buy program right now. Might be worth checking it out...