Forbidden is one that should never have been allowed to exist.
Absolutely! You can't go wrong with any of the Ozzy BS albums.
I read somewhere that they had second hand equipment when they recorded the first album.....
That first album - the Sabbath guys didn't know anything about the sound effects on it. They were away touring in Germany after laying down the tracks. While they were away the producer, Rodger Bain, added all that stuff.