I don't like
Symphony at all. It does sound pretentious, but also tacky. I'd pick something like
Aria over
Symphony any day (and I'm not exactly sold on
Aria).
I do like all the other names you listed. Well, I'd prefer
Natalie to
Natalia, and
Madeline or
Madeleine to
Magdalena, but they would definitely all get a nod of approval from me.