Rendering settings restrictions too: no user defined anti aliasing, and no "ultra", and only one level of material editing: the basic editor, so for this Vue4 owners will lose in quality, but on the other hand, Easel has GI, but then again, less controlable by the user. I think if you work with Poser and Vue4, you're not the target for Easel, which is aimed at beginners in 3d, those who want a simple app, and fast & good looking results. Go for Vue5Esprit, if you can, of course. More control over everything, procedural terrains, and radiosity.