Go with what you love . Do you think spelling it Aubree would make it feel less like its similar to Audrey because it looks different? Otherwise you could just got with Brie/Bree or Briella/Brielle is pretty too. I think if you absolutely love Aubrey though, go for it. Yes its similar but its not the same. My daughter has a similar name to my cousins daughters name, no one has ever said a thing about it and it certainly doesnt bother me.