At the moment my favourite girls' names in no particular order are:
Caitlin: Ok Originally Irish pronounced Cat leen or as good as I can not being Irish. so I would only choose if you have Irish connections.
Rosanna: reminds me of the song, ideal if you are wanting a Rose name as less popular than Rosie.
Rosalie: Again another song, on a par with Rosanna but I prefer Rosanna as Rosalie can often be seen along the promanade at Blackpool reading "tarrot cards" for a tenner.
Louisa : Very nice and classic.
Tierney: umm never heard of this I would say no on the basis that it is very different from your other name choices so perhaps not really you?
Saoirse: ok if you have Irish connections.
Kristen: Not keen, very cutesy, might get mistaken for Kirsty.
Amy: Boring and too popular.
Chloe; ok very pretty and very now.
Faye: Ok quite plain but better than Amy.