Wires, Cables, for a sound guy, have to be reliable.
Messing with faulty wires is a NO, NO stress thing.
These have 3 year guarantee and take quite some abuse, so carry a few spares for safety.
In your local music shops, these cost a bomb and waiting for "stock orders" takes months.
Buy for less than 1/2 your local music shops price, with far better than normal quality, around 3 days delivery (to your door), and 3 year guarantee.