So I've just recently got into Pagan Altar. I've heard Volume 1 and Mythical And Magical so far. I've got to say M&M is better but that might just be because its more initially accessible. Nevertheless, while listening to Volume 1, I enjoyed it but it didn't really stand out too much. But while listening to M&M, pretty much every song gave me that "holy shit, this is awesome" feeling.
That being said, the main riff of "Pagan Altar" (the song) has been stuck in my head all day.