Need 20 - 25 foot spk cables.

Having to move a pair of Sound Lab M2's to a new position in the home.  Problem is that the equi rack has to stay where it is.  So I will need 20 - 25 foot cables.  Real high end will be above my pay grade.  I had used in the past real honest to goodness, belden coax in 10 foot runs.  Roger Sanders had used this years ago with his speakers and ESL amp.  I have a ESL amp and to be honest for many years the coax sounded pretty good, but I'm sure I could do better for a long run.  Any comments appriciated.