It was suggested to me by a dealer who loves the Blades to use the Analysis Plus Oval 8 bi-wire speaker cable with the Blades. It is not the top end in the lineup.
I personally have always gone back to Audience cables. In fact, I bought my last speaker cable 2 days ago, Audience FrontRow for my Livingroom. My office also has Audience FrontRow.
When I had LEF LS50 in the office the FrontRow were superb. I am not using KEF anymore, but I would use the FrontRow if I ever got KEF again.
I did have a KRELL DOU 175XD in the past but only used the KRELL + FrontRow with headphones, not KEF speakers. The KRELL and KEF are a great combo.