H.M.S. Pinafore is, in my opinion, the best so far that I've seen of the series. I really didn't mind either Frankie Howerd or Peter Marshall (Yes, that Peter Marshall!) though I agree that Frankie could have sung his part more and that Peter was a bit too goofy. But they both fit in with the style of the production. I liked the dancing and the youthful supporting cast and the singing generally and enjoyed the DVD extras interview with the producer Judith de Paul, Frankie and Peter. I also enjoyed the part following which showed the real sailing ships and their crews in Portsmouth to, in what seems to be the New York City OpSail celebration, the George Washington Bridge(?). I would have liked to know more about the choral vocals and how they were added to the dancing since it seems that the dancers were also the singers. It seems unlikely that they mostly did both at the same time since the dancing and acrobatics looked rather strenuous. 8 out of 10.
