I just played American Idiot and The Wall from start to finish. For me, both are absolute masterpieces. I wouldn’t be able to say which is better than the other.
What’s the best concept album for you?
Time by ELO
Act II: The Father of Death, by The Protomen.
The story, the music, it all works for me.
Kendrick Lamar - Good kid M.A.A.D. city
I’ve listened to most of the other concept albums mentioned in this thread, but I believe deep in my heart of hearts, this album has the strongest story and emotional impact.
My favorite is Queensrÿche’s Operation: Mindcrime. It gets pretty regular listenings still.
666 by Aphrodite’s Child is pretty awesome.
It’s a concept album based on the Book of Revelation. This is also the band that Vangelis was in before he started scoring movies.