Well, I'm not real familiar with CadWorks but I am with Dietrichs D-CAM.
I guess my best advice to you would be go to a trade show where both are being shown. Sit down with each rep and spend at least an hour with each. That way you can compare the two programs.
My story is that, I was learning AutoCAD threw a home study program in order to then purchase TimberCAD. During my studies, I found out that TimberCAD was not available, at that time.
A friend suggested I take the 3 day course that the guild conference where they were teaching how to use D-CAM.
Having some drawing training and background using AutoCAD I picked up D-CAM very quickly.
I enjoy drawing in 3-D.
I then export a frame profile to a 2d program to create dimension drawings and shop drawings when needed.

Good luck with your research.
Jim Rogers

Whatever you do, have fun doing it!