Master of Puppets is the only Metallica album I can still stand to listen to. My reasoning is completely different, though. I loved both Load and Re-Load, so I'm not the guy who hates them just because they changed their sound. The thing is, I had an annoying Mormon friend whose only musical interest was Metallica. He was obsessed, and his fixation on the band ruined my ability to enjoy listening to them. Master is the only album he couldn't ruin for me because it is sheer sonic perfection.