My Opinion of Vue is it's as Stable as the Person using it; Meaning, you need to know the capabilities of your computer and be able to feel when an eminent crash is coming, but maybe I am good at that part because it's part of my job to troubleshoot computers and fix them. But Adam, you have to ask yourself why Industrial Light and Magic (TM) uses it if it is so unstable? And as far as a Learning Curve, Vue's is very short and totally easy to use. I know your C4D is touted to have the friendliest User Interface, but if it is easier than Vue than that is something to behold for sure.
Finale Note:
VUE ROCKS BABY!!!!!!!!!!!

I would rather be Politically Incorrect,
Then have Politically Correct-Incorrectness!!!