I'd say Pashmina; she was among my choices of Uchi villagers to get for my town. Even though I eventually chose Deirdre and have her now, I would say Pashmina is the best of the three. I can't say anything for Frita, but I have Muffy in my town right now, and she's okay.
Muffy! I had her not too long ago and her design/house-furniture is very cute (gothic lolita?). In my opinion, Frita looks very bizarre but her name/look makes sense. Pashmina looks plain to me, I have no experience with her so I can't really say much. I'm bias
I personally like Pashmina a lot and will probably be getting her for my own town xD But I think Frita would be a good choice, come on, who doesn't want a burger sheep in their town?;3 I had Muffy in a previous save and she's like a gothic lolita sheep which is awesome xD But up to you really:3
Don't forget, I can always help you while I'm resetting if the villager is popular c:
Why do you care what everyone else thinks? So you want to go with the most popular one...? If you like them all the same why don't you wait and see which pops up first.