Mandy is very much my sort of movie. but it's still not perfect to me. Every trope that makes up Mandy, the neon, the synth, the gore, whatever gimmick nonsense, safe to assume I loved it. But Mandy takes so long to get going. Normally that's not a mark against a movie in my book, but here's my problem: The entire first half of the movie that's all set-up, gave me absolutely no feel for the relationship between the two leads. It should be the most important part of the movie, it's the impetus for every worthwhile even that happened, but I honestly don't even know if they like each other. There was so much time to explore that dynamic, and they basically never did.
But then the real movie kicks in and that wasted time is sort of forgotten and you just enjoy that great, dumb, aesthetic shit.
Final rating:★★★½ - I really liked it. Would strongly recommend you give it your time.