I love them both! I have liked
Tabitha since high school (12 years ago) and I enjoy
Talia as a nickname for
Natalia, which is one of my top three girl's names. I've met a number of
Talia's in the last couple years, so I would cast my vote for
Tabitha. Plus I don't like that some people pronounce it TAHL-ee-uh and some tuh-LEE-uh.
Anyhow, both are nice, so you can't go wrong.