Nancy's was nice but i never wanted to be a blonde. 
Carolyn's hair was very thick and lovely, but a little too straight for my taste. Â A natural blonde myself, I have always been happy with my hair color but have longed for it to grow a wave or two. Â So, I'll have to say Vicky's thick wavy hair and Carolyn's tresses both win my vote. Â
I think many of the DS men had nice hair; Quentin's was wavy and lush and Morgan's looked thick and healthy, too. Â In fact, one of the few attractive fashions of the late 60s/early 70s were the longer men's hairstyles, which often looked very nice as long as they of the well-groomed, clean variety. Â All IMO, of course.
Maybe one of the reasons that so many of the men's hairstyles in the 1840 DS stories looked very authentic was that at least length-wise they were very close to those of the 1970s.