Out of those three -
Amélie is my favourite because of the movie, and I wouldn't hesitate to use it, and with the accent.
Then goes
Amelia, which it used to be one of my favourites and I still like it but in a lesser extent. I knew a girl with this name - she was very kind. :)
And finally
Amalia, which I also like but it doesn't appeal to me that much like the others do.
“Dear optimist, pessimist, and realist – while you guys were busy arguing about the glass of wine, I drank it! Sincerely, the opportunist!”
-Lori Greiner