I looked up QUALITY in a thesaurus and it gave the following:
element, kind, nature,
affection, affirmation, attribute,
parameter, peculiarity, predication, property,
nature of beast,
way of it.
When your writing, performance and work reflects ALL, or at the least, MOST of the above words, you're on your way to being something really special in stand up or any other art form.
Hint: It's not enough to just read the words, take some time to look them up and consider each one. Make it a meditation and an exercise in itself..