i've got the full MR, IM, and JP discographies (barring the Ripper albums), and I'll pull out Voyager, Spiral Castle, and Gates of Fire before I reach for Piece of Mind, Number of the Beast, or Seventh Son and way, way before I get British Steel, Sad Wings, or Screaming for Vengeance. The reasoning is simple, MR's music appeals to me more. I enjoy all three, but I get bord with JP to a greater extent than I do with MR or even IM.
Ozzy solo isn't even worthy to be compard to Sabbath. No More Tears is his Black Album, where he dropped all of his "shock rock" behavior and started writing ballads. Perhaps it was because he lost Rhoads, but still no excuse. Blizzard and Diary have a few good songs, as does Bark at the Moon. Don't get me started on Ozzmosis.