firstly...welcome to AHS! every album of ayu has some sort of unique tastes and feelings to it, so u shld try if u have the chance...hehe
A Song for XX - her voice is higher in this album with songs which are mainly ballads
LOVEppears - kind of like a dance album with some really good ballads
Duty - A dark album which really attracts with some dark, powerful songs
I am... - the entire album is composed by her! u shld really try it!
Rainbow - gives a dreamy kind of feeling which is different compared to other albums
Memorial Address - a mini-album which i highly recommend
MY STORY, (miss)understood, Secret, GUILTY - overall well-done albums u definitely shldn't miss
her BEST albums are perfect in my opinion but i din buy any of her remix albums, so i cant give any comments