I got my Kaya a few months before Beforever. Still don't see the differences. Kaya's wig is silky and soft. It can get tangled if not careful. On one of the pictures my new Kaya (in gray) is next to my older 2005 Kaya (in her meet dress). There are certainly differences between those two.
And this is also my old Kaya. Her hair was a mess and very dry, so I conditioned it and straightened it. This Kaya has chubbier face and slightly darker skin tone.
I got 25 as a part of a lot on eBay and had no intentions of keeping her until I got her out of the box. She is such a pretty sophisticated looking doll! Hair is nice and soft, wig relatively thick, face painting is gorgeous. We named her Leia and she definitely is here to stay
We just got Chrissa off of eBay a month or so ago. She is now my favorite (or one of AG doll. My only issue with her is thin wig. Love her hairstyle and hair color, so would rather not rewig her. Out of Mattel dolls that we have only Marie-Grace, Emily and Marisol seem to have nice thick wigs.