CiG
Approximately Infinite Universe
So it's happened that we've already done all four the years containing the first four Metallica albums. I've come to the conclusion that Ride the Lightning is the weakest of the first four Metallica albums, though it is still an A- album with numerous masterpieces on it.
No, it's the strongest by far. "Escape" being then only weak point. And even then it's tolerable. MoP is the weakest. Plodding and dull and not very memorable.
Ride the Lightning > Kill 'em All > Master of Puppets > And Justice for All
And Justice for All loses points (or whatever) especially because its production is utter trash.