These tracks are arguably better than those of Ozzy's era. I (being the Sabbath fan that I am) cannot really decide who was the better frontman. They were both so crucial to heavy metal of this day and age and are deffinetley one of my favorite bands of all time. Without these guys I dunno where i'd be in life right now.
The new tracks are quality (in case you were wondering) and each sound similar to their old sounds so as to not stray away from the feel of the album. Buy this if you're truly into Sabbath or Dio's solo stuff and you wont be dissapointed. This is pretty much "Mob Rules" and "Heaven and Hell" fused into one disc with some extra goodies!