Which one did you prefer in 1972 and what's your judgement now? Mine is that these are the ultimate hard rock opposites - the highly polished, amazingly recorded and perfectly performed Purple LP that I cannot even listen to these days (other than testing the equipment) vs raw, emotional, stoned and proto-grungy Sabbath that sounds like a buch of outtakes from different studios yet never grows old. In a way it's Purple's DSOTM vs Sabbath's Exile on Main St. I wasn't even born in 72 but I prefer Vol 4 by a mile today. What's your story?