I quite like
Dawn, and I think it would fit in pretty well with all the nature names which are around at the moment (
Summer,
Willow,
Lily etc.)
I don't like
Darla or
Darlene at all and I feel that "ene" names are really trashy and unattractive. I fine the "een" sound quite whiny sounding and when I see most of those names (apart from
Maureen) I think of the character "Lurleen" from the Simpsons and that's the image I get.