Must Silverlines Boleros,specifically be biwired?

Silverline recommends biwiring on their site for
Boleros and other speaker models.
Is this really important? Thanks.
Post removed 
Tvad, Thank for the post. Any thoughts on the Sonata vs. the Bolero?
Thanks again.
Post removed 
If you look at the Silverline site, it refers to a 6moons review, by someone who went from Sonata's to Bolero's. He said they were different rather than better. From memory, the Boleros were detailed, but smoother than the Sonatas, which seemed to have more bite. Really a question of personal choice and system matching