I know at this point is cliche but Velma.
Like, actual Velma, not pornstart-looking fanart Velma. I like her design a lot, from her smile, freckles, round face, short hair, fashion sense, body-shape, and of course her personality.
She's exactly someone I'd love to date.
Daphne is not bad, nor do I think she's shallow, unreachable or boring, but she doesn't appeal to me as much as Velma.
Fuck the version of Mystery Inc tho', not as a character itself but as a version of Velma.