Zoe is cool, and possibly the easiest to live with of the three. (This is also my favorite spelling - no Y, please.)
Zelda is a good name, but also makes me think of
The Legend of Zelda immediately.
Zara doesn't so much for me, sorry.
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Please rate my personal name lists:
www.behindthename.com/pnl/69381www.behindthename.com/pnl/69381/109399www.behindthename.com/pnl/69381/91835http://greens-end.myminicity.com/