Sheesh, DAZ isn't paying me a darn thing.  I have posted here on occasion - honestly, its usually when I find a technical problem I can't solve in Poser as people here are so helpful in that regard.   I like the Kid figures - if you look at my gallery here at Rendo, you'll see that they are mostly what I render.  The only vested interest I have in the Kids is that I want them to have lots of support - more products for me to use in my renders.  I know you are a fan of the Poser 4 figures, but I find newer releases to be far better.
I tried very hard to get use out of Ben as he falls in the midrange of ages between Matt and Luke, but his shoulders are just so bad.
Frankly, I find the strong emotion that some have posted with regard the Kids 4 seems over the top.  I mean, first of all, they are free.  Second of all, I don't see anyone else trying to do something with the Kids - Poser 8 had a new man and woman, but no new kids.