One of a very small handful of albums PERIOD that was all Thrilla, no Filla.
Most Complete album Iron Maiden ever did.
Oddly enough no 10 out of 10 songs in my opinion ( not like Hallowed be they Name, The Trooper or even some DiAnno ones era tracks, like Phantom of the Opera. ) yet also, not a single song under an 8, and easily the easiest to listen to end to end without hitting skip.
Seventh Son of a Seventh Son
Controversial, and many Maiden fans are torn on this one, but wildly ambitious sounding for Maiden, what with their whole concept album and Prog experimentation.
And yet even with if you had Bruce singing all the tracks on Killers and Iron Maiden, I would rather listen to Powerslave and 7th Son.
I think a lot of comes to to a number of other factors... for some of the few Maiden heads more old school then me, it was the rawness of the original albums, the whole NWOBHM schtik. Personally, I find it has the same kind of impact on ones objectivity that i see many Thrash heads show when they rave over Kill em All, or Killing is my Business or Hell Awaits...... like somehow, the originality of them makes them musically superior, even though all the above band produced much better music later on.
But.. better or not, it doesn't have that same punch or "WOW" factor as the first taste did.
The second group are the "Latter Day Purists" who pretty much clamor for the original.. just to sound more like they know what they are talking about. Can't choose the popular albums, so lets choose something obscure, and for extra street cred, the older the better.
And the 3rd group are those who just subjectively prefer the more "Raw" and "Punkish" sound of the early Maiden tracks. No crime there, except when said people cannot see the line between objectivity and subjectivity, and try to preach opinions as Gospel.
Which of course is one of the difficulties of music in general, because so much of it has to do with emotional impact, objectivity is very difficult, and of course, some objectively technically brilliant music has all the passion of paint drying. *couchnecrophagistcough*
Musically, for you, i would equate it to being akin to the first time you made it with a girl ( barring massive disaster like her dad walking in) in that in technique you were probably an utter failure, but because of the excitement and emotion of the "discovery" it always holds a special place, that "technically" more proficient partners can't seem to touch.
Personally, I love about 1/2 of each of the first two albums, but each have several tracks I utterly despise too.
But then again...if you look over your question... you will see how utterly subjective a question it is, and that in and of itself, means it is impossible to give an objective and definitive answer.