^Agreed. I will like her better if she'd dance better. But she is still my number 1.
Well, this is my list :
1.
Hamasaki Ayumi 
I really love her Heaven and A Best Black!!
2.
Yui Now that, Yui's Rolling Star is awesome. That's what made me put her at number 2.
3.
BoA I bought her Made In Twenty (20) Album. It was good but not as good as A Best Black! I like the Winter Love and Key of Heart so she is at number 3 now!
4.
Otsuka Ai Well I don't listen to her much but her very first song that I ever heard was "Friends" (fu-ren-zu) and it is freaking nice and sad.
5.
Utada Hikaru I don't really listen to her songs nowadays. I know she has a new album but I haven't check it out. :/
6.
Mika Nakashima and
Hitomi Shimatani I have very little of these 2's song but they are really good. Can consider the least I had listen to but among the best.
As for other artists, I have yet to check them out so I am still far behind compared to you all!