I have one Elf CD, and one on vinyl. And those are from fairly well into his career.
Yeah, Dehumanizer was really moving into the heavyness that was more like Dio's solo material at the time.
I personally love Live Evil. Ronnie's takes on classic Sabbath material was pretty much awesome. The way he screamed "I am Iron Man", opposed to Ozzy's almost synthesized sound.
I don't have any elf stuff, really. I just thought it was interesting just how far he goes back.
Yeah, Live Evil is awesome. I remember in high school we watched this video tape about "The dangers of Rock and Roll." Now, this was in 1993 or so, and the tape was ridiculously out of date(from 1987 or something), but it had tons of cool footage from bands I'd never heard of, like Mercyful Fate and Venom. It's funny, because this tape drove my interest in '80s metal even deeper than it already was, thus having the opposite of the intended effect. Throughout the '90s I listened to my fair share of Weezer, Nirvana, Offspring, Sonic Youth and all that, but for the most part I was all about Slayer, Maiden, Dio, Megadeth, etc etc etc, and I went through that whole decade thinking that most of the music of the day sucked. (I also played the shit out of the Sex Pistols album, which none of my peers could ever appreciate the awesomeness of.)
They showed a clip from a live Sabbath show with Dio, the part on Sign of the Southern Cross about "A little white shape looked down at me," etc, and I was like, "Damn, this is EVIL! I must have it!"
I'd already had Dehumanizer for awhile, but being that I was only 14 or 15, and of course, this being before I'd ever heard of the internet, I had no idea that Dio had done other albums with Sabbath.
I was disappointed when I saved up my Lawn mowing money and purchased Heaven and Hell and Mob Rules, only to find out that the "Big Black shape/little white shape" part was not to be found in the studio versions. Couple years later I stumbled upon Live Evil, and finally, there it was, in all its splendor.
So a big thanks goes out to religious fanaticism and the "satanic panic" of the '80s for introducing me to some kickass metal!