A simple Male 3.5mm jack to Male 3.5mm jack cable, LINDY audio 1metre long. The connector strain reliefs are properly bonded to the sheath of the cable, and the cable feels nice and durable. Only time (years?) will tell how good it really is, but it has good promise.
Audio performance is good, and there are no crackles with handling, and no buzz is picked up even when wrapped around a compact flourescent.
I've used one to connect my hi-fi to a little box housing a 50dB pad, and a second from this box to the microphone input on an Olympus WS-311M Digital Voice Recorder
(my review for the WS-311M shows the details for the pad), and also later for connecting the WS-311M output to a nice big amplifier.
So, five stars.