I do enjoy listening to Metallica now and again Krist, but I never really understood how they became arguably the biggest metal band out there. And for me, Megadeth has made many far better records.
Then again, I am a big Iron Maiden fan, but I don't rate them as highly as fellow Uk-ers Priest, Saxon or Motorhead.
Other points re Metallica:
James and Kirk do work well together for sure
Lars seems to be quite an unlikable individual
The best musician in the band has always been the bass player