VersaTuner does not support running in a virtual machine due to potential issues with data corruption in the USB virtualization. VersaTuner is only officially supported on "bare metal" windows installations on PC hardware. Parallels Boot Camp on Mac hardware is not officially supported, but may have less risk of an unrecoverable flash failure.
We are continuing to investigate this situation and will provide updated information when it becomes available.
Parallels, VMWare, and VirtualBox are VM solutions.
BootCamp is a bare-metal Windows install on a Mac. Theoretically, using BootCamp to install Windows on a Mac should be indistinguishable from Windows on any other laptop but the devil is in the details (mostly driver issues).