Richard, after reading about your system, my advice would be to not go out and spend a bunch of money on cables. I mean no offense by this, and your system may sound fantastic, but it doesn’t appear to be the type of amp/speakers that are going to reflect upgrading your cables. I know because I used to have B&W speakers myself.
The things you are looking for would be more easily achieved IMO with a speaker upgrade. There are some well-reviewed bookshelf designs that will give you what you’re looking for if you are able to audition some.
To answer your actual question, I’ve found Zu Event speaker cables to have the sound characteristics you’re looking for. To my ears they are a bit too analytical (and I run Zu speakers), but you might prefer them for your tastes. Good luck
The things you are looking for would be more easily achieved IMO with a speaker upgrade. There are some well-reviewed bookshelf designs that will give you what you’re looking for if you are able to audition some.
To answer your actual question, I’ve found Zu Event speaker cables to have the sound characteristics you’re looking for. To my ears they are a bit too analytical (and I run Zu speakers), but you might prefer them for your tastes. Good luck