Benefit of Tri or Quad Wire compared to Bi wire

My speakers are four way and have fourteen bananas (7 red and 7 black) on the back. There are three sets of jumpers. I am about to purchase new speaker cable. Has anyone tried tri wire or quad wire? According to Robert Harley - you should at least bi wire when you have the terminals to do so. I am assuming there is diminishing return when you go to three or four cables. Please write your experience of tri or quad wiring, preferably compared to bi wire or single wire. Thanks, as always.