Having good tools is important. Knowing how to use the tools is more important. There's an old western saying, "Beware of the man that carries just one gun."

Carrara and DS are a pretty potent combination and they've been created for hobbyists and pros that want to work with pre-rigged content. This is a huge luxury when compared to some of the other choices out there.

There are some applications out there that are more mature and handle character animation better but they come at a price increase and a substantial learning curve (trust me on this one). Additionally, you need to re-rig your characters since Carrara's FBX export is a little underwhelming. 

Unless you have cash and time to burn, sticking with what you have is probably wise. 

If you haven't seen it, e-brink has done some pretty decent work with Carrara here. Check out the movie - fun stuff. 

Mark