ROTS was the best because it had the most action and character development and drama. In an overall perspective, ROTS may have been better and darker than ESB and more revealing than ROTJ. The ANH still may be a better introduction film than the PM. ANH might be more kids friendly than PM. So, kids may like PM the most. The AOTC is the most romantic of the PT. The ROTS mentions Plagueis and shows epic battles which I love.