Speaker cable vs. interconnect cable length

Icsi, SEARCH and read. There are probably-millions of words in the 'goN about interconnects.
.

Yup, lots of words with interconnect. But I thought there might be preferred interconnects for the lengths (18'-24') I had in mind. Thanks...

I'm reviving this thread, becuase I am now faced with the same situation. It seems that if one has to look at long ICs, using balanced is recommended. But what if (as in my case) my amp only has RCA inputs? Is there any value at all in using a balanced cable which then has to go through a Balanced / RCA converter?

Tonyptony...If you use rca inputs/outputs (with an adapter)the interconnect will be an unbalanced interface even if the wires and XLR connectors are configured for balanced use. When balanced interconnects are used in unbalanced mode signal pin(-) is just grounded to the shield.

That's what I suspected. So, in a case of an RCA IC, is it still a better idea to go long IC / shorter speaker cable?