I'm not a huge fan of
Talya or
Talia. Based on the Hebrew, it's 3 syllables- TAH-lee-a. Again based on the Hebrew, I would say the most "correct" way of transcribing it is Taliyah. However, since it's transcribed as either
Talia or
Talya in other languages, I think
Talia gives you a more of an indication of the pronunciation.
Ayelet is better than
Talia, but I honestly prefer
Ayala.
Ayelet was super popular in
Israel in the 1980s and it's still popular now.