I only own A Best and A Complete, and I don't rely 100% on wikipedia, so someone who owns A Ballads and A Best II has to tell you about the rest
but I don't think A Best II has any resung material.. just "remastered", which isn't very special usually.
A Best:
A Song for XX*
Trust*
Depend on you*
* New Vocal & Mix
And the ~10th Anniversary~ songs of course
so to complete the list:
Mirrorcle World:
You
Depend on you
A Complete ~All Singles~:
Who...
days/GREEN:
TO BE
LOVE ~Destiny~
I think all songs on MY STORY Classical are also resung. Judging from the previews on her website, the A Ballads songs don't sound resung.. just this one:
A Ballads
A Song for XX "Session #II"
Again, I'm not sure