For the past six months I've been playing with an 19 oz. McDermott cue with a Moori tip and using a 20 oz Valley bar cue for breaking. Today I forgot my McDermott and used the one piece Valley for breaking and playing. The hit seemed more solid and I think I was playing somewhat better than normal. Do you think it's only in my mind or do you think a one piece cue can affect your play? I know people tout Predator and OB-1 shafts as low deflection and can affect/improve your play. I would like to hear your opinions.