It's hard to have a top ten of Maiden as they have so many great songs.
It's also hard to compare the very new with the old.
However, I am absolutely loving The Red and the Black, I have it perhaps surpassing Starblind and Lord of Light from the past two albums. All these three beat everything from Dance of death, Brave new world, Fear of the dark, No prayer for the Dying, X factor and Virtual XI and even Killers.
Not sure if they beat:
Hallowed
Powerslave
Revalations
Infinite Dreams
Phantom of the Opera