Susan is classic AND dated, imo. I could picture a resurgence in 20-25 years though something tells me
Susanna /
Susannah and
Susanne /
Suzanne might place higher on the charts.
Sue -- one of my sister's mns; can't say I love it because it makes me think of litigation
Suellen -- "
Dallas" and someone who is rather down home and not too bright
Susannah -- love it but prefer it sans the h
Susan -- dated and not exciting
Susie -- really cute though I'm not sure it's ready for a comeback at this point
Suzanne -- like it but not as well as
Susanna or even
Susanne (not wild about the letter z)
Overall fave:
Susanna followed by
Susannah then
Susanne