As a sidenote I can mention that Mika Immonen was asked why he was playing with his old cue, instead of his $4000 Exceed MI4. He explained that it was in for a pin change, he could not get used to the wavy pin, he prefered the feel of the United Joint (5/16-14 piloted)
What's the difference in a Wavy pin and 3/8x10? Will a wavy joint shaft fit a 3/8x10 and vice versa?