Paco de Lucia is definitely one of the best flamenco guitarist the world has ever seen but regarding the point of concerte de aranjuez john williams is the best.
Watch carefully each and every single note being played....just judge the unique precision with which each string is plucked.
It's better if you have the music piece with you, it clearly shows that there is a different magic in john williams' technique.
Paco de Lucia's spirit is amazing but for classical pieces the technique sometimes rules and you never find a man having a greater technique than John Williams.
Notice how accurate his pause and development of the mood is, maybe you will see it one day.