I came from Hash Animation:Master.
I have A:M 2004 and love it.
There are some very pretty features. And the workflow ist perfect.
Hair, Dynamics, UV-Editor, very easy texturing, great animation workflow !!!
There are two tools: The SetupMachine (for Maya, too) and the Weightmover.
These the greatest tools you can found for rigging and weighten a mesh to bones !!!
A:M use Splines like Nurbs-Objects in C4D.
The Splines knows 5 Point Patches, that is like an 5Point Polygon. Very good to modeling.
And there are Hooks, to change the Mesh-resolution very easy.
But this is the problem, why A:M can’t perfect import 3D-Objects from other 3D-Tools.
And this is because I change the software.
I buy ZBrush2 and love it near same. So easy modeling.
When I want to animate I use Models. But when I must so long modeling bevore I can animate, when it can be so easy like ZBrush I need another 3D-Tool.
There are some Plugins to import polygonobjekte into A:MN-Splines, but when the Splinestructure is not optimally there are many creases at the object.
A:M is near a standalone in 3D.
Setupmachine and Weigthmover are two tools that gives A:M more Power for animation than Maya or 3Ds had.
A:M is slower than other renderers - but is not easy to compare because you can change Light and Shadow Parameters, A:M render in own look, compare the renderpics you can see, A:M is sometimes sensitively with user and crash.
Hash works all the time at A:M and build in new Features and work at more stable.
Many Users know V9 from A:M and this was the most crashing version.
When A:M render I can surf in the web without lose speed, and can modeling in another window with new started A:M - when C4D render the PC sometimes is little frozen, only abbort rendering is fast. Here is A:M slower by abbort. May it is the Hypertheading in my P4.
C4D use all the Power of P4. A:M use not HT and other tools like browser can use other half of HT.
But A:M is V11 now and the chrashes are less.
Near every Week there is and update with bugfixes and sometimes with new features for free.
When you buy A:M you can update near every week to the end of the year!
When there is a new CD 2000/2001/2002/2003/2004 you cant install the new updates.
Then you must buy a new Update for $99.
The price of A:M is very great: $299
You get: dynamic Hair (very nice quality), Dynamics RigidBody and Softbody (Cloth but not perfect calculation), IK, Lippsynch, very good texturing tools, particles (with sprites) and dynamic, Crowds, Radiosity, Softreflection, and many more …
C4D with this features cost near $3000 (Studio Bundle)
I buy C4D now and begin to love it, too!
I see the renderer is faster, the quality of rendering is clear (but when you want to render comic-look A:M renders better, one think so other so).
C4D is more stable and can import other 3D-polygonobjects (logical).
The calculation of softbodies and collisiondection is better.
I don’t know enougth about Mocca and hope there are to less users use it, and this is because I read so less about MoMix and Poses in Mocca.
Ich think Mocca has many features like animation in A:M, but there are maybe less users use it.
This is my experience near all of my 3D.
Here are some of my works with A:M : http://www.hash.com/forums/index.php?showtopic=6556
Here are some very good movies makes with A:M :http://amfilms.hash.com/
And here are some VideoTutorials to see the workflow: http://www.hash.com/VM/
I hope I have same fun with C4D PRAY