I can't comment on CAD, but in the world of 3D graphics I find SideFX's Houdini and The Foundry's Modo to be way more useable, extensible, and feature rich than Autodesk's Maya.
I can't comment on CAD, but in the world of 3D graphics I find SideFX's Houdini and The Foundry's Modo to be way more useable, extensible, and feature rich than Autodesk's Maya.