Of that selection, I have only heard Somewhere in Time, Puppets, Peace Sells and Reign in Blood. I have absolutely no desire to listen to Ozzy's effort and don't really care for Motorhead's either. Sabbath's Seventh Star is something that I have not thought about though I have heard it is good. Perhaps one day I will take a listen.
However, last from that four is, ironically, Somewhere in Time - not exactly my favourite Maiden album. Third Peace Sells and second Reign in Blood.
The winner - by a long stretch - Master of Puppets. Possibly one of the greatest metal albums of all time.