I like
Cara and
Claire, but I've never liked Blaire very much. However, I like it better with an e than without.
Of the three, I like
Cara the best, partly because I have good memories of two Caras I used to know. That's probably not too helpful to you though. : -) I like
Cara pronounced with a long a (CAR-a) as opposed to a short a (care-A). (I've heard it both ways)