Audio extension leads: 4m (12 feet) (Long Melford CO10)

I have two audio extension leads which both stretch to approx 4m (12 feet); they have a 3.5mm jack plug at one end and a 3.5mm socket at the other end. These are ideal if you use wired headphones but need to move further away from where the jack is plugged in, and can also be used to extend a guitar lead.
You can take both or just one of them; please state which you would prefer.