I did not like Dario Argento's 1977 Suspiria much. The use of colors & lighting and the set design were impressive, but the filmmakers failed to deliver a satisfying story, despite an intriguing premise. And the effects used for the climax were really, really pathetic. When I first saw the film a few years ago, I could not believe this was the film that so many people had made such a fuss about over the years.
So I was a bit surprised to have enjoyed the 2018 remake by Luca Guadagnino and writer David Kajganich as much as I did. Fantastic effects, makeup, music, lighting, choreography. Great lead by Dakota Johnson. And a tour-de-force performance by Tilda Swinton. On my first viewing last year, I would have given it 7.5-8.0/10. But on rewatching it, it's a 9/10.
One of the main areas that could have been improved was the sound quality. I had a hard time understanding what some of the performers were saying because the sound was a bit muddy—which was made even more difficult when they were speaking with non-native accents. Markos' makeup prosthetics also looked a little wacky. Since everything else in the film was so realistic, that was one regrettably weak point.
I also didn't follow some parts of the background of the story, that I am sure were significant for the filmmakers but went over my head. Personally, I usually like getting it all (or most of what's going on) with a single viewing. For this one, it may take several viewings—it's even possible I may never understand it all.
There was a trick in the casting that I did not know about and did not realize had occurred even after two viewings! So they succeeded on that score at least.