I have no doubts on this: 5, 6, 1 and 3 are the movies I liked the most from the F&F series, and exactly in that order. Never liked 2, 4 or 7, in fact my headcanon considers 6 the last F&F movie. I am indiferent about Fate of the Furious and Hobbs & Shaw, though, because I never watched those, and I don't have interest in doing so.