Lighter can be better. There is a big argument going on about this but if you think about it further than just the ability of the speed of the cue there is some simple logic. If you have nothing in your hand and swing your arm as fast as you can in a breaking motion; that is as fast as a cue will ever move. Some people and not all can move it just as fast with a cue in their hand. It is like restrictor plates on a race car. If the car was lighter it would go faster but the air into the engine limits the speed of the car despite its weight just as the human body does. The muscles on a human body can only contract so fast. So the optimum break cue weight for each individual is the heaviest weight they can move at their maximum speed. For some people they cannot reach their max speed with a cue in hand so the lighter the cue the better. On the flip side some people may be able to accelerate a 20oz cue at their maximum speed. I would personally take several hours at your local pool hall, grab different weighted house cues and break with each of them. Since buying a radar gun is impractical see which weight you break with the most constistency and control. This will probably be the best weight for you unless something physically changes with you or your technique.
