Hi, I don't know vx, so I don't express myself.
also topsolid is a hybrid parametric cad.
it has inside, all part of the surfaces that it manages in an egregia way.
among other things the version 7 just output, manages the surfaces in class a+, therefore remarkable.
clearly,when amounts,especially to work on the cam part you have to do the sewing operation if there are anomalies,but this allows you to make your element a solid wanting and then work it better and above all parameterize it.
I also make molds from a lifetime, and I believe that the only limit of the moldists and that do not fail much around, in the sense that one buys true, all to buy true, one buys tebis, and all behind.
I repeat, I know that maybe in Italy do not market it +.