I've only heard it streaming, but I'd say it's one of their best produced albums. It's got a huge, deep, spacious sound.
I'm not sure I'd call it middle eastern sounding. I'd say eastern Mediterranean. It's definitely DCD in that antique style, but this is one of their richer, more layered works. It's definitely a complete concept album that takes you on a journey more than any of their other albums. I really like it a lot. It's what I'm listening to right now.