I don't think this speaker cable needs any introductions.  The FLX/SLiP 14/4 from Audioquest is currently one of the best value speaker cables on the market. It can be terminated single or bi-wire. It has a smooth, balanced sound across the frequency range without obvious flaws.  

The manufacturer generally recommends the single-wire termination (effectively transforming the cable in a 2 x 11AWG) but bi-wire also works a treat.

This one was purchased from Future Shop, probably the number one online cable dealer in UK, and terminated with 2 x 2 AQ bananas both ends. Unfortunately at some point I used wall mounted speakers and, as I didn't have enough clearance from the back wall, I had to cut the bananas on the speaker end on one of the cables. 

For sale here a single cable, 13m long, terminated with bananas at the amp end and bare (crimped) wire at the speaker end, in good condition otherwise.  You will need two of these for a pair of speakers. 

RRP 89.40£ from Future Shop

Please be aware that I will be unavailable between 5th-11th June and between 18th-24th June. Any purchases made between these dates will be shipped after 11th / 24th June.