This article is quite interesting (it mentions Hendry amongst others), all about players and their cues:
https://wst.tv/the-cue-for-success/
From the article:
Canadian Alain Robidoux reached the semi-finals here in Sheffield in 1997, however his game was subsequently left in tatters when his cue was snapped into several pieces. He had it sent for repairs, but when the cue maker noticed a sponsor’s logo had been fixed to it, he took offence and set about it like firewood. The following season, Robidoux failed to win a single match.
[For clarity, the cue was in for minor repairs, and the cuemaker snapped it. I heard the logo was on the cue case, not the cue itself, for a cheap-end equipment manufacturer.]
[According to Shaun Murphy:]
“When you go to places like Shanghai, where the humidity is high, the white doesn’t deflect as much around the table. The cue can make the difference. My coach Chris Henry and I actually contemplated the idea of walking out into the arena for the Shanghai Masters with three different cues. One standard cue, one for higher deflection and one for lower deflection. I’d start off with the standard one and go up or down depending on what was required. It is just getting over the stigma that you play with one cue and that is it. Until it works, everyone thinks you are completely off your head.
“I’d never rule out doing it because I think it is the future. We are a good way behind in snooker as far as technology is concerned. I believe in 50 years everyone will look back on us and think we were relics. You take one cue everywhere and expect it to perform the same. Roger Federer doesn’t use the same string tension wherever he goes. However, if a player came out with five different cues at a major snooker event you would think he had lost the plot.”
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The effect of humidity level on CB deflection is new to me. Sometimes I wonder how anyone makes a ball with English!
that’s crazy. 
