Well,
Personally, I started using Cinema 4D as a second software after Blender last year and I managed to advance more and more and very quickly. It's very intuitive and has fast and accurate modeling tools. As for animation which is among my prefered section in 3D world, I find its tools getting better and better especially when R11 came out this year. As for rendering, Vray and it's global illumination is looking fantastic.
In one word, it's my prefered 3D application and I'm doing everything possible to get it on the top of the others just by sharing experiences with each other.
Cheers

,
MikArt3D