I haven't seen many anime movies yet but the stand out one that i've seen so far was
Big Fish & Begonia the story was really beautiful but the art even more so, i'm surprised it hasn't surpassed an 8 on MAL but a 7.6 is acceptable ig
Koe no Katachi was also great and Black Butler: Book of Atlantic is
the best movie i've seen so far from any serialized anime series and manages to stand out on its own and keep the hype from the series, instead of just being okay but not really that amazing, like the first MHA movie or SAO movie, those movies are still fun to watch too and they're exciting but they didn't have me drop my jaw in shock or get me on the edge of my seat like the Black Butler movie did.