The term 'of the highest quality' can be expressed in a variety of ways, as evidenced by the crossword solutions. The four-letter word 'BEST' is a common way to express excellence, while the five-letter word 'PRIME' is often used to describe something of the highest quality. The six-letter words 'TIPTOP' and 'FINEST' are also used to express the highest quality, as is the five-letter word 'SUPER.' The eight-letter words 'fourstar' and 'TOPNOTCH' are also used to describe something of the highest quality, as is the nine-letter word 'topdrawer.' All of these words are used to express the idea of something being of the highest quality.