Best Metallica album ??

ok, to all of you that are or were into them ..... Of these albums, which do you think was there best ??? .... kill 'em all , ride the lightening, master of puppets or and justice for all ?????
I have a hard time deciding between Master, and Justice. I ended up giving the nod to Master.

I will say, the Metallica/G&R concert was bad ***!

:headbang:

j