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Con Only extreme black or white backgrounds available
Competitors like 3d4medical applications have a nice neutral grey vignetting background option. In general, more control and options for the background (and in general) would be much appreciated.
Con No easy way to adjust controls since there are no user settings
There should be user configurable settings but there are none. If one wants to change them to something different it will require using a hotkey program and setting up a profile specifically for each of the visible body line of applications.
That being said, the control bindings are shown in a downloadable PDF on the visible body support website.