DIY - Klotz MC5000 (screened twin core, around £3 per metre, inc, p&p), plus RCAs of your choice - I prefer Neutrik Profi NF2C- B/2, available for around £14 per pair inc p&p.
Available at considerably inflated prices ready-made on EPay and elsewhere.
Hi Vinny,
interested in how you (or anyone else for that matter) connect the MC5000:
Use both cores for signal, connect screen both ends
Use both cores for signal, connect screen one end
Use one core for signal, other for return, screen not connected
etc, etc - I have seen arguments for various methods, and I am just interested in a fresh view.