Ironically, my favorite is Priscilla Catherine! Priscilla is a lovely biblical name that I'm not brave enough to use. My thoughts on the others:
Chloe Rebecca--- I know a lot of little Chloe/Khloes so the appeal isn't there for me.
Elizabeth Rose-- Can't really go wrong with this. I know a baby girl born in September named Elizabeth Rose.
Sophia Adele-- I'd like to see Adelle Sophia.
Vivienne Rose-- Very sweet and perfect.
Rose Isabella-- No, too many Isabellas and I don't like the flow of this name anyway. My least favorite.