To get a full idea of G9, I just purchased the flagship V9 HD, in order to see if G9 is still somehow useful to me.
In fact male G9s might still be useful, but since V9 I would brand G9 for female characters a total fail.
Sausage limbs, joint bend creases resulting from a mindless mesh topology, PBR shaders that force you to crank up your exposure values. 
My DAZ wishlist has shrunk to 4 items, since everything is for G9 now. and I was still hoping for useful hair for G8. Most likeley not happening anymore.
All that's left will be for environments and tools.