Have you searched the forums here? I think you'll find your answer. I purchased the originals as they were half the price at the time.
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I upgraded my AU24 speaker cable to the "e" version and my immediate impression after getting them back was that the upgrade was definitely worth it. More relaxed, yet more dynamic. More detail, yet more musical. Basically, across-the-board improvement.
Night and day difference? Hardly, because I think the Au24 is really good to start with.
Never got to compare the interconnects.