Your best performance will be with a shaft u always play with.... on a table u always play on. With Consistent room conditions. Different shafts play different. If it wasn't the case I would just use 14mm shafts because it minimizes the chance of warpage and u use clean it polllish it for 20 years and never get below 12mm lol...as with everything sure ... but whats that tell us ... we can learn to play with anything .... shaft hype is just hype ... people bicker and b1tch about what is best when the real answer is ... there is no best. everyone plays different everyone has a different idea of feel .... everyone likes a different tip .... there is no best no right no wrong
Ps I like solid maple and ivory ferrules that are an inch long