I've been pairing my Miracles with Null Audio's Lune MKII cables for the past 2 years. The Lunes are amazing (noticeably deeper bass reach and wider soundstage) and complement the Miracles exceptionally well. I highly recommend this pairing for those looking for a decent aftermarket cable.
However, my Lunes are faulty and I'd like to try something new. Currently eyeing Toxic's new 22AWG Silver Widow's due to their famed bass. Anyone with a recommendation? :)