Both. I fucking love all of their work. But if I had to pick, then probably '80s. They were more in their element, and less awkward than in their early days when they weren't really sure yet what kind of a band they wanted to be.
That being said, there are some real fucking gems from their '70s work that I adore.
__________________
----------------------
|--- Mic's Albums---|
----------------------
-----------------------------
|--- Deafbox Industries---|
-----------------------------
|