They're both meshes. Both have a specific look out of the box. The real idea of how useful a Poser figure is, is how much you can do with it. V3 currently has a ton of support, textures, morphs (both body and head), Jessie has what looks to be an excellent start in head morphs at rDNA, but hasn't been out long enough to build up any kind of library for support. Ask again after some more stuff is available. I've been looking at renders of James, and it's ALMOST made me ready to spend money on P6. Both Jessie and James look like they've got lots of potential, if vendors start providing support for them. Frankly, I'm hoping that a UTC plugin is made for the new figures. That and a service pack release that fixes the memory leak would do it.