3/5 for me. I have brief dalliances with “metal” and Metallica were probably the first band (along with GnR) of that ilk to catch my attention. That run up to, and including, the black album is as solid as solid can be. On the rare occasions that I have a “metal day”, I will generally reach for “Master Of Puppets”.
I’ve never listened to anything post the black album and I am willing to concede that they’re “a bit silly”. When they’re good, they’re really good, but I have no idea what bad Metallica sounds like.