Yeah, that is up there for me but if I could choose a top three it'd go
1. Machine Head
2. In Rock
3. Fireball
But the MkIII had plenty of great albums like Burn of course, Stormbringer, Who Do We Think We Are, Come Taste The Band, etc.
Just a very consistent band, in general. Some albums get the L from me though..
I agree with your list, only my hierarchy would be reversed.