Please try rewording your question into more neutral phrasing that does not call for a good/bad judgement on their character, as this is not part of the historic method. You might try "What long-term effects did the Borgia family have on Italy?"

This submission has been removed because it violates the rule on poll-type questions. These poll-type questions do not lend themselves to answers with a firm foundation in sources and research, and the resulting threads usually turn into monsters with enormous speculation and little focussed discussion. “Most”, “least”, "best" and "worst" questions usually lead to vague, subjective, and speculative answers.