Sorry not to be able to reply directly to your question.
I had a 0.5m GS 5 and loved it, but a 1.5m length of another one ( you don't want to read about it ) beat the GS.
UHF Magazine says the relatively inexpensive Atlas Opus is even better than their previous reference, the WW GS 5:
http://www.uhfmag.com/Cables.html
(Scroll down to the bottom.)
I had a 0.5m GS 5 and loved it, but a 1.5m length of another one ( you don't want to read about it ) beat the GS.
UHF Magazine says the relatively inexpensive Atlas Opus is even better than their previous reference, the WW GS 5:
http://www.uhfmag.com/Cables.html
(Scroll down to the bottom.)