It is generally recommended that the use of the passive be minimized. Write assertively, I think. Avoid the use of vulgarisms that might piss off the reader. Avoid rephrasing, which is, in other words, paraphrasing or rewording of a statement, sort of like repeating it. I've told you a million times not to exaggerate.
Ambiguity is more or less undesirable.
Hyperbole is the worst mistake you can possibly make. Boise, Idaho's 7327 English teachers agree that all statistics should be verified. Don't verbify nouns. I have traveled all over the world, known many important people, received many degrees, and have learned that it is in bad taste to use yourself as an expert example even though I am one. When choosing among two, make the best choice.