Im not sure how much the cue really matters, Hendry won 7 world titles with a mass produced £40 cue and spent many years crushing players with the worlds best hand made, made to measure custom cues.
I think Ken D also won the world championship with a £2 bent cue lol.
And then i have had three amazing cues and i cant play to save my life, one very similar to Barry Hawkins, one that was made for Dominic Dale and one that a pro snooker coach spent a couple of hours picking out from a rack of high end cues.
Mostly about the feel, Hendry has claimed that cues don't matter yet when his was smashed his performance dropped significantly, he swapped and changed all over the show. Quite a few players like that these days that go through cues, Stephen Maguire, Dominic Dale, Luca Brecel was chopping and changing, John Higgins is always messing with different lengths, tip sizes etc, Mark Allen as mentioned above was going through cues from different makers.
It really is weird in a game where you're in control of what the cue does, most players blame the cue and lose confidence in it, instead of blaming themselves. Snooker just has that effect on people, you can do everything the same and one minute be potting everything and the next hardly able to pot a ball. It really messes with the mind.