The Organic Modeler myth revisited... since I teach I have had to try a lot of modeling packages and what I have discovered is that all of them have the same basic capabilities, their differences in price lie with the rendering or extra features that come with them. Since you already have 3DStudio you might try to experiment with the following commands:
1) create a cube and sub divide as needed
2) convert to mesh and start extruding faces
3) apply a Mesh Smooth modifier
4) instant Blob
This procedure applies to almost any 3D modeling software. The other commands that that are used to create them are Lathe, Loft and NURBS. Once you know how to use them in one software the trick is in finding how the procedure works in the other's. For example the Mesh Smooth modifier of 3D Max is called HyperNURBS in Cinema.
Rhino is relatively easy to learn specially if you know AutoCad since most of the interface is based on it.
All of the 3D modeling software basically use the same math and the difference lies in how easy you can play with the original basic shape. I have tried Maya and have not found anything in particular that I could not do in any of the other packages. Maya's strength lies in its ease of using inverse kinematics (create a skeleton and define how the different parts can move). 3DMax strength used to be that it was cheaper than Maya. C4D strength lies in that it can animate almost anything and its ease of use in editing the original object. You can even do blobs in Sketch Up with their smooth option.
What do I use:
1) Cinema 4D mainly
2) Cheetah 3D- learning it since it cost $80.00us but it is mac only, it is a simple modeler and has Radiosity and supports HDRI
3) Blender 3D- spending time with it since it is free and runs under any operating system. Its interface takes a lot of getting used to but there are some good videos that you can download.
4) 3D Studio Viz - since I have to teach it at the school
What I don't use
1) Maya - too expensive and it has too many commands that I will never use as an architect
2) Rhino - it looks too much like AutoCAD
3) FormZ - could never get the hang of it
Sorry for the long post
AIA NCARBAC26 US/INT -> AC08
Macbook Pro M1 Max 64GB ram, OS X 10.XX latest
Learning: VW, RVT
Teaching & Using: AC, Rhino, ACAD, RVT, SU, AI, PS, InD, TM, C4D, ATL