Transfil flying snake carbon cable sets KG24 £24.99. almost as good as Gore at 1/2 the price, only thing I can see that is different between Transfil and Gore is the Gore wire cable has the Goretex wrap that makes it very slippery, running both types at the moment and the Gore is supper smooth, but the Transfil is smooth and last about 2 years per cable set, then the sleeve between the cable and out gets rucked up,mainly in the loop to the rear mech,have not run the Gore long enough to give any feed back on it yet.
Im just about to try out some PowerCordz Synthetic Fibre cable on the outer parts of Transfil to see how it works.