As for solid albums, vanty knows what's up. After School - Dressed to kill, f(x) - Pink Tape, f(x) - Red Light are AOTY material.
May I throw Brown Eyed Girls "Black Box" into the mix. I picked "Pink Tape" as AOTY last year in a close race, but find myself listening to "Black Box" more. This year "Dressed to Kill" is still to be beaten.