I really like the name & am still considering it for our daughter. The only downfall I noticed was when I told my family about the name & my dad said it out loud, it sounded kind of like "annoying". Maybe it has something to do with the New England accent, because it doesn't sound that way to me when I say it.
What an wonderful name, and to my viewpoint, it's much better than plain Anna. The Ann in it is where the similarity is observed. An out of the ordinary, great name with delight.