Hi
Good question.
I played with them all over the years, formz maya, strata, C4D and then max.
Max had the best dwg importer at the time, and was made by the same company as Autocad which is the main stream cad package.
That's why I settled with it, also Forest pro , Railclone and Vray at the time were the bread and butter of the business.
I have moved to Corona obviously, but that was my reason.
Back When I sued it C4D R11, it was not as good as Max for accuracy, more of a Graphic Product Package.
The snaps were not good either.
I loved it at the time, but I wanted to use the industry standard, and the company I was working for wanted to competing with the big boys.
Price wise they are about the same now.
Phil