I don’t know if this will help you, but I offer it in case it might.
I have the KEF Reference 3s which are voiced similarly to the Blades (I’ve compared them directly - exact same system - just plugged the bananas in one vs. the other). I’m less sure about impedance curves, etc, but I assume they’re reasonably similar.
I used to run the speakers with analysis plus oval 9s non bi-wire. It was quite good, I then auditioned Nordost Tyr II w/ and without their jumper, as well as comparable Transparent and Audioquest variants. Of those options, the Nordost was clearly the best.(I would agree with other forum discussions that lower/mid level Nordost is a bit harsh but the upper end of the Nordost line is excellent.
I ended up buying Silversimith Audio Fidelium’s with their jumpers. They are even a more detailed than the Nordost without being bright. They’re very, very good but may not be everyone’s cup of tea.
The SAs were significantly less money for what is arguably a reference level cable (according to many here and reviewer Greg Weaver). I won’t personally argue that case, but they are very good though I sometimes wonder about Valhalla 2s…
The point I’d like to make is this: I personally wouldn’t be buying a cable today - no matter how good the deal or reputation of the cable - in anticipation of speakers to come this fall as you’ll want to audition in your system.
Fortunately, there will always be good options (new or used). You will find something then which you like - and it may not even break the bank.
Best,