I had purchased MEP-plus version but noted that I am not able to add more multi-channel or independent or switchable sound tracks over a single movie. This multi channel feature is available only in video pro x; Since my purchase was downloaded one, I need to fall back to older version of the Video Pro and before I embark on the purchase, I would like to know the differences between these 4 versions, preferable in a table like format for easy comparsion of what I may miss out in my older versions.

Regards