Choose your 3 favorites or the 3 that you consider the best of Black Sabbath's first 8 albums. This thread is concerned with the period (1968-1978) in which the band consisted of the original lineup of Tommy Iommi on guitar, Bill Ward on drums, Geezer Butler on bass and Ozzy Osbourne on vocals. Following 'Never Say Die,' Osbourne left the band, and they went through a series of different vocalists and have changed lineups a number of times in the years since. While they put out some very good records in these subsequent years, this thread is concerned with their original lineup and first decade of work. While I have always liked Sabbath to an extent, beyond 'Paranoid' and the radio hits, I had never delved much deeper into their catalogue until recently. And I have been very impressed by what I have heard. As a relative Sabbath noob, I would like to know which of their albums the knowledgable members here consider to be their best, and also which of their albums that are not regarded as highly. Please explain your choices or discuss which of their albums are not as good if you wish to, as I would love to hear your thoughts about their work.