Personally, I think that when cables move into the 1k+ price bracket, it should be at the very least, a 'master of one' in something that makes it shine compared to all other cables. Hence, having had the opportunity to hear it, I'm not really impressed by the Heracles to say the least. It sounds more like a cable that is a jack of all trades but a master of none. It has a good sounstage, resolution (focus of notes), musicality, but it struggles to leave an impression that lasts beyond thinking 'this sounds good'.
Personally, the Leonidas is a much better bet. The Leonidas is so amazingly engaging and musical, that it immediately made me tear open my wallet. Yes, the leonidas loses to the Heracles in resolution and soundstage, but its musicality (without sacrificing too much resolution) is so outstanding that it sets itself apart from all other cables I've heard till date (DHC, Toxic, Plussound, Audio Minor). The Heracles just doesnt have that 'ZOMFG 'Wow' factor.