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
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.
Act II: The Father of Death, by The Protomen.
The story, the music, it all works for me.
Hemispheres (the first side is one long concept piece, but the flip side is awesome too) - Rush