Album Battle (Metallica, Iron Maiden, and Megadeth)?

Dude, I'm not gonna list them all, but Metallica has them beat by a shitload. I used to be a Metallica fan, but nowadays,not so much. I still love them but they've gone downhill. Maiden is a powerhouse of metal. They are gods. Megadave, ehhh, I mean Megadeth are in the same boat. But I have to say that Metallica takes the cake on all of your comparisons. (at least the ones that had Metallica in them). I would say Hail Maiden. I know that wasn't your question, but I'm giving you my opinion.