Humm,I think this Vue confusion is pure company marketing. It is all the same product under the hood with improvements. The problem for the company is how to extract the maximum ammount of money possible from the user base. So the spin doctors (marketing dept.) tell you V 4 Pro is not really v 4 when the code and menu itmes tell you it is v 4 with improvements. How many of you with both still use v 4??? Now will they go on with this silly charade and come up with V 5 pro on these two lines that really the same----I wonder? I wil purchase V 5 only if it does a lot of things I want in addition the V 4....