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).
Ag insider logo xs@2xhoustonreef
What Speakers and Amp are you using?
AZ Double Barrel and Purist 20th Anniversary Aqueous.
Other cable that would be in the same category is the Kimber Bi-Focal XL.