MUCC sort of stops existing for me after ''6''. I guess most albums relesed after that usually tend to have at least one or two good tracks on them, but as a whole I just don't feel them as much as their older stuff. I feel like there's something more raw in their older songs, the newer material just feels so polished. I guess I also simply just prefer stuff with a more negative, oppressing atmosphere than stuff like Flight or any of their other anime OP-tier tracks. I'm not really feeling their little excursions into metalcore either. As far as their output beyond my personal favorite era goes, I'd say that Shion is probably the most consistently enjoyable album of theirs. There's only 2 or 3 songs on there that I absolutely despise.. I also have a slight weakness for Gokusai, but to be honest that one's like.. entirely driven by nostalgia, cuz it was one of the (if not THE) first Japanese albums I ever bought..
Personal fav. album is Homura Uta, even though it's sort of kind of too long