Trying to put things civilly now. 

Genesis and V5 won't work in poser, I really don't care.

Miki3 won't work in DS, also, I don't care.  I don't have either of them and probably won't.

I may sound hostile to DAZ, but in reality, I'm not.  I am disgusted that DS is known, as well as Cararra, for lack of documentation. 

A lot of the other arguments, like the lack of "morph follower" in Poser, okay, so instead, I use dynamic cloth to get the same result.  A lot of dynamic cloth can be used between different figures with little or no tweaking needed.

Characters, currently I'm on the way to making Kate into something in the sixteen to eighteen year old bracket, not hard, and the only thing I'm using is Poser.  (Not hard, but time consuming, very time consuming.)

Lousy mesh that doesn't bend right, I don't care much either.  I clothe almost everone, so how their butt bends, big deal.  I'll never see the tearing and compression. 

So most of the arguments are set aside except what am I comfortable working with.  In reality, that's the only question that counts for anything.  Were there documentation available for DS4 that I could even print a few pertinent pages of to work with, I may be tempted to give it a try.  Without it, well, I tried, I failed, and frustration is not a good thing. 

The "I" in Doric is Silent.