Basically I'm hoping someone can give advice with a comparison of the modeling tools in Hexagon, Vue 6 and Cinema 4D.

I have Hexagon and am working through the docs/tutorials right now.  I'm also interested in getting either Vue 6 or Cinema 4D.  I'm wondering if I'm wasting my time with Hexagon?  Is the modeling feature set in Vue 6 or Cinema 4D greater?  Would my time be better spent learning those tools?  I've heard great things about Hexagon in terms of it's flexibility but if it turns out Hexagon's modeling tools are only a subset of what's possible in Vue 6 or Cinema 4D then is it really worth my time to learn Hexagon?

I have a similar question comparing Vue 6 to Cinema 4D.  What are the main distinctions between the two?  Is there anything you simply can't accomplish with one of them that you can with the other?