Favorite:
Shoko Nakagawa: Big☆Bang!!!
Other favorites:
Nell: 6집 - Separation Anxiety
Epik High: 5집 - Pieces, Part One
aiko: Himitsu
HIGH and MIGHTY COLOR: ROCK PIT
I think ayaka is going to beat all of them though.
GUILTY, Kingdom and DOLCE weren't good enough as a whole to me.