Want to make up a set of speaker cables and would welcome any pointers towards favourite cabling.  Probably wont want more than 4 metres max so must be able to be purchased in custom lengths. While I don't wish to go overboard I'd like something better than the usual bulk cable seen on TM etc.

Cat 5/6 ethernet cables built into this:

www.tnt-audio.com/clinica/triple_t_e.html

Multiple variations on an original theme:

www.tnt-audio.com/clinica/triple_t_2_e.html

and the final iterations:

www.tnt-audio.com/clinica/ffrc_e.html

TNT Audio never shy about cables have plenty of others listed too.

Use some good terminators and you are set. Or solder them all the way through...