Both are attractive names that are trendy for different generations (Lauren for Millennials, Ava for Gen Z). I would honestly consider using Lauren, since it matches my taste (has a prominent L, ends with an "n" sound, etc.), if not for the fact that I have known
so many growing up. It's going to become a total "Mom name."
Ava is a returning classic, both short and a palindrome. Impossible to misspell. Even if it is ubiquitous for Gen Z it still retains some punchy charm. So while Lauren might suit me more personally, I believe Ava has better overall appeal.
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