AZ Double Barrel and Purist

I plan to upgrade my bi-wire speaker cables and would like to have your opinions and recommendation on AZ Double Barrel and Purist(please specify purist models).
What Speakers and Amp are you using?
Parrasound jc1 and bw n802.
AZ Double Barrel and Purist 20th Anniversary Aqueous.
Other cable that would be in the same category is the Kimber Bi-Focal XL.
Thanks alot.