Which is better, SuperCAT Sound or SuperCAT XM?

SuperCAT Sound is our most robust cable, has a 300 Newton pull strength and is extremely flexible and abrasion resistant. SuperCAT Sound is ideal for the most rigorous applications and high noise environments for analog over Cat5e. SuperCAT XM is optimized for high speed data over long distances. Fully compatible with analog over Cat applications, SuperCAT XM is a bit more rigid and has a lower pull strength. Both have the same smooth high strength polyurethane jacket.