I, too started out with a heavier cue, @ 20oz.(Espiritu), but in all fairness, alot of women, especially in my league, prefer a heavier weighted cue. My next cue came in @ 19.5oz(Jacoby), as did the next(Jacoby). Then, my last Skip weighed in @ 19.25oz. My Allers SP, that I got while waiting on my new Skip, weighs 19oz, which I really liked. I had requested that my new Skip weigh approximately what the old Skip had weighed, 19.25oz, but when I got to weigh it, on a digital, calibrated scale, it actually came in @ 19.0 oz, right on the nose, as the Allers SP. I was actually happy with this, as, after playing with the Allers for a little over 6 months, I was really liking the 19 oz weight. I am currently very comfortable playing at the weights that both of my cues are currently at, and will likely stay there.
It was once mentioned here before, that many people, and especially beginners, like to start out in the heavier weights because it tends to straighten out your stroke, because it's bringing your strokin' arm into the correct position for accurate strokes.
As to breaking cues.....I used to have a Falcon j/b, and had gotten it at the recommended 21oz. I did okay with it. I wound up selling that cue, pratically brand new, and began breaking with whichever cue I was currently playing with. I noticed that my breaks began to get a bit better. Now, I do not break with my current Skip, but use the Allers SP. It is 60" long, and I find that I am getting some really terrific breaks with it. The longer cue is allowing me to get more forward motion into my break stroke, thereby giving me a more powerful break.
Lisa