I have Joss two cues that are quite the same. Both close to 18.5 oz. One has a 30-inch shaft and the other a 29 inch. I use a hard Moori tip on each. Would the longer or shorter shaft cue be better as my break cue? Reason? Right now, I use the 30-inch shaft for breaking...no scientific reasoning. Well... (Barbox 8-ball with a front ball smash break.)