Depends on the mood for the day my friend.
SW is a brutally revealing cable, with extremely impactful bass.
Not a bright cable, treble is still smooth and very well extended.
BW is a cable focused more on the mids. Beautifully colored and allows me to listen to the lushness of the music.
Despite being a copper cable, treble is surprisingly extended.
Biggest diff between the 2 for me would be bass and mids.
SW has a tighter, yet more impactful bass. BW has a slightly more loose and rounded bass, but never flabby.
SW has very clear mids, while BW has a lush yet beautiful rendition of mids.
I'll be making a trip to Melbourne later this month. If time permits, maybe we can meet up for a coffee?
You can try the 2 cables on your own Miracle then.