I work mostly with animation, but Pro Pack has features that should appeal to non-animators, also. In addition to what everyone else has already mentioned: There's 2D motion blur. Even if you aren't rendering a movie, you can still add motion blur to still-frame renders, in addition to antialiasing. Eliminates some postwork, and is more accurate, also. There's support for additional image file formats, like PNG. And you can use JPEG files as bump maps without converting to BUM, which saves a lot of space on your hard drive. The downside is that you can't save to Poser's uncompressed BUM format, but I've never understood why anyone would want to, other than as a convenience for non-Pro Pack users. The thumbnails are in PNG format, so you don't need the render-and-paste trick to get nice thumbnails ... just render to a 91x91 PNG, and place it in the Libraries folder. I personally have a love/hate relationship with the Setup Room, but having read the tutorials for conventional figure creation, I wouldn't try to create figures any other way.