Fantastische Hure said:
Movie 6 was directed by the fellow who did Summer-Wars and the Girl Who Leapt Through Time. Also who did the first Digimon Movie. Some call him the next Hayao Miyazaki.
Pretty much an exaggeration if we're talking about quality. His early stuff was OK, though his more famous, newer titles have too much nonsensical and unexplained ideas, along with pretty dumb asspulls, to really compare him to Miyazaki, even if Miyazaki's 21st Century works have been a massive step down in quality from before.
On topic though, I've only seen Strong World and Film Z, so out of the two, I'd go with Film Z, since it's villain was far more fleshed out. Of other films I've yet to see but think deserve an honourable mention, Movie 6 does things a lot differently from the other movies, allowing it to stand out more, whilst Movie 7 gets a mention for being a remake of the 2nd best arc of the series.
Don't really care about viewing Film Gold tbh, considering it just seems like more of the same, not to mention seeing those Gold Cloth ripoffs made by the main villain's DF is pretty offputting as far as creativity goes.