IMHO, ST V is horrible. After the greatness of movies 2-4, I have rarely if ever felt so let down and cheated when walking out of a movie theater.
I have spoken.
I really don't get III or IV, even if enjoyable, being considered great or at all comparable to II. And more leniency/latitude or not to V probably does depend in pretty part on view of it relative to those of III and IV.