... I have never shot with a 20 or 21 oz cue that 'pinged'...
That reminds me of a tournament where I watched Efren play and could hear a definite "ping" on almost every shot he made - even the softer hits. Don't know what the weight of the cue was he was using but Efren is known for playing with heavy cue. Wonder how much the tip has to do with the ping?