One problem I have with Daz Studio, is the plugins, because I find that
programmers can never write good technical manuals on how to use
the programs they write.  Not Ever!   Therefore, the only way this works
out well is with a software that is popular enough that a real technical writer
can write a book that will have an audience.   Poser has that.
The one book that was written for Daz isn't very good.

Next, it's only any good if the person writing the code is really really professional,
and really knows what they are doing. You tend to get that when the company
sellign the main software is the one putting most of the functionality in there.
If you get some semi-professional out there writing a plugin, there is more
likelihood of problems.  So another problems I see with Daz is this business
of relying on third party semi-professionals.
 
I've already had this problem with two Daz plugins: Faceshop 5 and Folder Favorites.

I have both Poser 8 and Daz studio with animate 2. I may use Daz studio for a few things,
but dang, it's so much better to have consistent code and good instruction.