What are some alternatives?
When comparing Chief Architect Premier and PathEngine, you can also consider the following products
Maya - Maya in Launchpad
SelfCAD - SelfCAD is an online 3D modeling and slicing software.
Cinema 4D - Cinema 4D is a 3D modeling, animation, motion graphics and rendering application.
EQUINOX-3D - EQUINOX-3D offers 3D modeling, animation, photorealistic rendering, photorealistic VR content creation, CAD/CAM, 3D printing, laser-cutting and more.
ZBrush - ZBrush is a digital sculpting and painting software solution.
Aartform Curvy 3D - Aartform Curvy 3D is an easy and fast sculpting program for Windows.