Well to be honest I've never been able to figure Zbrush out. I'm deeply in awe of the things I've seen made with ZBrush, but it doesn't "click" with me. Blacksmith otoh is EASY to use. But try the trial version, it can do anything the full version can do - except save your work :o) so it's a good way of figrureing out if the program can do what you want it to. Another cool thing about Blacksmith3D is the built in CR2 wizard. In short, once you've made your morph, you save it with the CR2 wizard and it will make you an new cr2 (and optionally a new obj as well) with your morph allready loaded. IMO that is VERY cool it you've made a morph that spans several bodyparts. You can also export all the bits of the obj "the old way" and load those as morph targets, but the CR2 wizard is lots easier.

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.