Haha, I was going to ask "What about Elf?"
This is Rainbow. Yeah, there may be a duff track or two on each album (though not on Rising, and only "LA Connection" on LLRnR) but there are no duff ALBUMS, I'm sorry, but as good as Heaven and Hell and Mob Rules are, Dehumanizer and Heaven and Hell are not on that level (they were made after Iommi became "Riff-Master General" and those albums had to fall in line with that) and as legendary as the first two Dio records are (Holy Diver STILL holds up) and as much as I like some of the later Goldy stuff, I don't think the material from "Lock Up The Wolves" on is at the same level.