Thank you all for the information.  I'm sorry to read that clothing morphs can be limiting; that's especially unfortunate considering the types of scenes I have in mind to create.  I'm going to have a lot of experimenting to look forward to.

I'm going to be in a position to buy a retail copy of Poser 7, next month, and there's a lot of content in the Marketplace that I would love to be able to work with without having to worry about compatibility issues with D|S.  While I understand that D|S is a powerful tool, and that its popularity is growing, I'm also aware of the bias against it by vendors who create content for Poser and opt not to test in D|S.  Should I stick with D|S since I won't need the content-creation tools available in Poser, or should I buy a copy of Poser so that I can use content created for it?