My Acoustic Zen Satori cables exhibit the sound characteristics you’re looking for, and their jumpers are $300 new and should be more than fine for your speakers. What speaker cables are you currently using?
Given your speakers I’m not sure you need to spend that much on jumpers. I’d first do a trial of these and see if they work for you as they may be perfectly fine and save you $$$. Best of luck.
https://sites.google.com/view/pine-tree-audio/speaker-cables/binding-post-jumpers/visceral-jumpers