You're kind of comparing apples to oranges here. V Carve Pro is mainly targeted at woodworkers and signmakers, while Visual Mill is a more general purpose CAM package.
Visual Mill has a lot more features than V-Carve Pro, but V-Carve Pro has some features that VM does not.
What version of Visual mill are you looking at?
VM Standard cost twice as much as VCP. It has 3D machining, which VCP does not. VCP has nesting, which VM does not. Adding nesting to VM will bring the cost up to 3x that of VCP. But the nesting is probably better than VCP's nesting.
If you're just doing basic cuts, you might want to look at something like SheetCAM, along with an inexpensive or free CAD program like Draftsight. That can get you started for 1/3 the cost of V-Carve Pro, with many of the same features.
A huge number of router users are using V-Carve Pro, and love it. They have an excellent user forum filled with satisfied users.
I don't see a lot of VM users. Part of that has to do with the cost, especially for hobby users. I have a friend that uses VM for Solidworks, and from what I've seen of it, it's very powerful.
In the end, I always say to get what you like the best. The easiest to use FOR YOU is usually the better choice.