I just picked up Slayer "Diabolus in musica" 2xLP because I found it cheap and used. Not surprisingly, it ain't so hot, which is OK-- every band of this stature is allowed a couple of missteps. What might not be OK is my apparent need to own said missteps if I like the band enough. My Stones LPs go later than they really should (especially when I'm missing early ones), I own the falsetto Discharge records, I own nearly every Black Flag record, no matter how unlistenably self-indulgent and wanky. I guess the drive for completism over quality control is an early indication of a record collecting problem in gestation.