Between those two Daphne for sure. I don't know much about JLD in real life except for that she's from a billionaire family but Elaine the character is one of the worst human beings in TV history. That turns me off. And she has poison pussy (ask John Germaine).
Daphne is not the prettiest woman ever but she's darn cute. And she's a virgin who's very horny and curious about sex (in Seinfeld, at least). What's hotter than that?
If given an open choice from around that time: I was always a Debbie Dunning guy. When she would come on in short shorts, a tight top, and pigtails I would lose my mind as a youngster. I know most preferred Pamala Anderson but I'm not most.