If you still haven't decided, I think you should get Nicki. She is really unique and her hair is really cool. (The reason why I am saying that is because you said you have a lot of blondes in your collection.) However I think that you should take a look at their stories to see which one you like better.

Who do you think will be more fun to tell stories for that is who you should get.

Which total collection are you more drawn to? Do you prefer one girl's accessories and outfits over the other. It may help in deciding. They are both beautiful dolls and I don't think you can go wrong with either one.

you should get Nicki!!!! She is so much more unique, and she is a great doll.

Im kinda tied as well. I think I might get nicki just because her shirt and dress are separte while Isabel's two shirts are actually one shirt