With the availability of all the "fix" files and weight mapping for V4, she is now "sort of" like a new character. Sort of. Except all my old content stills works with her. Hmmm. That's a plus. I may just keep her in my runtime. My only concern for V4 is the question: "Is Daz vendictive enough the pull V4 and her morph pack, forcing new users to move to something else?"

As to Antonia and Anastasia, I've got them both. I have a favorite. It is Ana.

As I see the way this battle shapes up, it comes down, as always, to what people want, and what they are able to do for themselves.

My guess is, the people who will embrace Antonia are those who are fully capable of modeling and making the changes they desire to her underlying mesh themselves. The fact that she is open soiurce appeals to this sort of user, and I'm sure she will be their choice. For those of us not so tallented, then the figure is less appealing. She is not a pretty girl "out of the box" and I've seen no characters offered for her (either free or for pay) that solve this problem. The morph sets out there are less than wonderful IMHO, and there are many different sets. Too many. How in the world is a modeller going to make anything not knowing what morphs the user has? 

Anastasia has the advantage (and yes, it IS an advantage... it spells STANDARDS) of having a single creator, through whom there are "official" morphs and upgrades. This means that modellers can create for her and KNOW that their works will play nicely with the character. There is an extant base of different faces for her (for those who don't have the skills to make them.) The biggest selling point for me is how her figure morphs. I've gritched endlessly here in the forums about Poser girls having "invisible bras." Ana does not. She has heard about gravity, and her body responds in kind.

All this said, all three of these ladies are going to stay in my runtime. You don't throw out anything this good!