Highest break was in the mid 60s, and it took a bit of performance enhancers (bitter) to get there.
Regarding Ronnie, if there's any sportsman around today whose head I'd like to get inside of, it's his. When he's at his best he's truly the best snooker player the world has ever seen. At his worst, he's temperamental and surreal, but still hugely entertaining.
Like all the great personalities, he's cynical and comes across as a bit of a dick sometimes. He was playing Alan Robidoux, I think, and it was around the time he started to play some shots left-handed. Robidoux and others said it was disrespectful - a sign of Ronnie showing off, when he should always use his stronger right arm. Ronnie responded with something along the lines of 'Well, I can play with my left arm than Robidoux can with his right'.
Your bone's got a little machine