Man I don't even know where to begin. There are just so many worth checking out.
An absolute must have is Lynch Mob 'Wicked Sensation'.
How about these:
Great White (anything from 'hooked' or older)
Jake E. Lee era Ozzy
RR era Ozzy
Some of those are kinda obvious. Here are a few that may not be:
Enuffs Z Nuff
The list goes on and on....
"I have opinions of my own - strong opinions - but I don't always agree with them."