Who cares about better? Just find something you like. After many years of listening, I found that, for speaker cables, I like the sound of a larger aggregate gauge cable consisting of multiple, small diameter, solid core conductors, made from high quality copper (like OCC), and individually (each strand separate) insulated with foamed PE, cotton, or foamed Teflon. Not too many cables meet that criteria but, there are a few and, I could live with any of them.
Regarding older vs. newer cables, I cannot tell much difference between the "plus" version and the newer "reference" version of Harmonic Technology's Pro 9 or Pro 11 cables, but I like them all.
Regarding older vs. newer cables, I cannot tell much difference between the "plus" version and the newer "reference" version of Harmonic Technology's Pro 9 or Pro 11 cables, but I like them all.