It's been a week since I bought it. It is great maiden album, very progressive and very heavy. I like that. I'ts a great album, all songs are outstanding, very heavy and great riffs; I don´t like to say this or that album is the best becuase all maiden albums have their charm.This is my 5th maiden album. First I got "Death on the Road" (yes,  I know I became a maiden fan pretty late, but what can I say, I'm only 13.), my second album was "Seventh son of a Seventh Son" a great album, you know this this is one of the only 2 maiden albums that were 1 in the UK Charts. That night my cousin gave me his "Live at Donnington" CD. I love that CD, although it is pretty damaged. Then i bought "The Number of the Beast". It is an outrageous album.  It is the other album that went 1in the UK Charts ( the other albums always were 2nd or 3rd, neither lower no higher).finally I got "a matter of life and death."