I would suggest:
Mika Nakashima: All her albums are good especially MUSIC.
Shiina Ringo: I suggest Shouso Strip, its what got me into Shiina.
Kimura Kaela: For her I suggest KAELA and Circle, I don't really like scratch. Another good single of hers is Jasper.
Rie fu: Her best work to me is her album Rie fu.
BONNIE PINK: I haven't really listened to her older work but Thinking Out Loud is very good.
If you can't find the downloads then you can PM me
.