I've been using Poser too long to give it up (since version 2 and I forget what year that was).  I found DAZ Studio is easier to select and apply from different Runtimes unlike Poser which requires too much clicking.  The interface is better than Poser's and less cluttered, but I just can't get the hang of using it as my primary program.  I still prefer Poser 5 & 6 over DS, and DS doesn't import Poser scenes very well--items disappear from the scene.  Also, I use Poser 5/6 with Vue 5 exclusively and Vue doesn't import DS files.  I'm kind of sorry I upgraded to Poser 6 since I still use Poser 5 mostly.  Poser 4 was ideal except that it doesn't accept multiple Runtimes and there are limits to subfolders.

Overall, I think DAZ Studio shows promise and one day I may switch to it and dump Poser.  I think the main reason that DAZ Studio is so popular is because it's free (which is okay) and it gives people an opportunity to try out 3D modeling and posing which is also a good thing especially for merchants selling content.

One of these days I'm going to try to learn DAZ Studio.

Poser 2, 3, 4, 5, 6, 7, 8, 9, 10, Pro 2014, 11, 11 Pro