I normally rate my albums out of 5 and I gave
Rocka Rolla a 2 which is a bad mark and in my journal I said this about it below and I'd say it was easily the worst album from the band (based on what I've heard, which is around 80% of their output)
"on their first effort
Rocka Rolla they had given us a fairly terrible interpretation of a Black Sabbath style sound in an unfocused mishmash of a debut album"
By the time of
Sad Wings of Destiny the band had moved up several notches in terms of quality and gave us a very good album, but the following
Sin After Sin was even better and gave us Judas Priest at their most interesting. But the daddy of them all is surely
Stained Class a 1970's metal monster and the band who never quite match the dark majesty of this album again.