Interconnects are an important component in your system and you should ensure that the leads that you use to connect the various components are in good condition. Discard leads with frayed cables or corroded plugs.
It is possible to make up very high quality leads for a fraction of the price charged for some of the prestige brands.
If you would like leads made up to suit your exact requirements simply order the total cable length required, plus the number of RCA plugs, plus a half hour labour per pair. All solder connections use Cardas quadeutectic solder.
As an example, if you wanted 2 leads @75cm, and two @ 30cm, you would order 2.1 metres of cable, 8 RCA plugs, and 1 hour of labour.
See Jon Risch article for a detailed analysis of materials for interconnects. http://www.geocities.com/jonrisch/i1.htm