In terms of build quality, I'm guessing the stock is also unlikely to break or degrade? Or are you referring more to the aesthetics?
The stock cable seems sturdy and unlikely to break or degrade. I got the custom cable because the stock one was too long for my use. The copper series cable seems a bit more sturdier, flexible, sexier, and one could probably use the massive 6,3mm Neutrik plug in self defence.