I don't think U2 have deteriorated with age. Their Atomic Bomb album was great and in the same vein as the Joshua Tree.
City Of Binding Lights...Miracle Drug... Like Where The Steets Have No Name and I Still Haven't Found What I'm Looking For.
i was thinking a bit before Joshua Tree..further back in time...up until Under A Blood Red Sky...anyway, we are going off topic so i'll stop banging on before the moderators kick I disagrees