A complete return to form in my eyes after the dreadful Somewhere in Time. It has some flaws for sure, I don't really like how Moonchild starts and Only the Good Die Young ends, feels like they are trying too much to insist its a concept album, instead of just letting the music explain it. I also think the title track has a few dull sections, and takes a little long to get going, on the other hand it also has some of the best moments on the album. Can I Play with Madness and The Clairvoyant are stand-out singles in my opinion, very energetic and playful songs. Only the Good Die Young is a brilliant closer, and The Prophecy is certainly one of the most underrated Iron Maiden songs.
Overall I will probably put it slightly above Piece of Mind, but not quite as high as Powerslave.

This is their magnum opus

Their final good album, and their best one. Everything they're been building towards cumulated here. Every song is good, not a single filler. Play with madness, Clairvoyant and Evil that men do would have been chart destroying hits if released a few years earlier, but by this time, the world had already grown tired from the metal phase and was moving to grunge and rap. The other songs would have been highlights if released in their weaker albums. Literally the only complaint I have is the album cover looks pretty ugly. This is the top of the mountain. Other than a brief flash during Brave New World, this is the end of their golden era.