The Atlas Opus is a great cable. I use it and prefer it to the higher-priced Wireworld Gold Starlight, which is the only other one I have tried at or above the Opus' price point. ( I would mention the Zu Ash too but I don't know what it's going for these days. )
A word in the favour, too, of Joe Mazzaglia's cables and their maker, recommended above by Fishboat. I have a pair of Auricle analog interconnects from Joe. They sound superb; way, way, way better than they should for the price.
