I like
Madeline the best, since it lends itself to so many pronunciations. I call that
Maddie MAD-ah-LYNE, so it's an easy guess to say that it's my favourite of the conventional pronunciations.
I have a guilty pleasure form of it, though, and that's
Madelaine, pronunced MAD-uh-LAYNE. I'd never use it, but I think it's lovely. (I like most names that end in the "lane" sound--another I really love is Helaine.)
Array
"What are these parents thinking?...Let's name her Madison--she'll live in her own world: 16 square miles surrounded by reality." -- Susan Lampert Smith