My current favs in order.
1. Somewhere in Time (I like the atmosphere very much and it contains my favourite song of all time, Alexander the Great.)
2. Piece of Mind (also a perfect album, great songs, dark and emotional sounding..)
3. The X Factor (might be a strange choice, but if I look at the compositions, it's simply the best and most complex Maiden album)
4. Seventh Son of Seventh Son (simply brilliant, fantastic concept and excellent music, best vocals)
5. Powerslave
6. The Number of the Beast
7. Killers
8. Brave New World
9. Virtual XI
10. Fear of the Dark
11. Dance of Death
12. No Prayer for the Dying
13. Iron Maiden (can't help it, I think it's a good album, but I'm a fan of the more complex style which has started with Killers..The Phantom of the Opera and Remember Tomorrow are simply fantastic songs followed by Charlotte the Harlot..the rest is okay)