There isn't much that can go wrong with a speaker cable and that rings true here. With very nice thick cable and chunky jack connectors specifically designed for power amp use you can't go wrong. They will take a range of knocks and tugs without bending or risking loosing connection and they look the part to the keen-eyed audience members.
This particular cable at 1,5M works a treat for linking a stack of two 2x12 cabs (G212 Vintages as it happens) and would be more than happy with high power systems like Bass rigs or even PA use for those using passive speakers.