there are lots of ideas on how to make something, just like there are lots of people. Everybody's got an idea & an opinion.
Everyone knows you can move something faster, when it's lighter. But, does that mean we should all be hitting the Cue ball with 8 ounce sticks... NO !!! But Jump Shot Cues, that are light ,work GREAT for moving something FAST.
There is a "middle of the road syndrome" to contend with, on just about every issue. You cannot make much progress, whacking a a Bridge Nail, with a Tack Hammer. General rules in Billiards say that you can control the positional speed of the Cue Ball better with a lighter Cue, but you have more accuracy with a heavier Cue.
That's a genuine "Catch 22" situation. Postion is worthless if you miss the shot & vice versa. If you make a ball & have no position, you are still at a standstill.
So, back to the "middle of the road syndrome". Try a cue that just feels good. Who cares what it weighs. A 20 ounce cue, that is balanced well, will feel lighter.
The Break Shot is a matter of KNOWLEDGE, adjusting for table conditions & most of all >>> Accuracy with a little speed.
Remember .... quoting Steve Mizerak, "the major mistake, that players make on the Break Shot, is having a wild Cue Ball".