Ozzy is the man. Always will be the one who started it all. But I have a couple Dio cds and he has a great voice. Its the same thing as the people who compare Priest with Maiden. They're both great , they have their cds that rock and some that suck. I LOVE OZZY he will always be my fav. Just like Priest. But Dio and Maiden can't be booted in the ass. Cause they rock to.