My specific industry background involved concept definition wherein sketching was used to explore sizing and configuration options before committing to 3D solid CAD. Currently, I utilize MoI3D employing solid part primitives and then translate to Alibre Design via .stp export. Individual solid objects are readily combined into sub-assemblies within Alibre. My models are offered in .stp203 and .3dm formats as I believe it portends the future of CAD with reduced software overhead (bells and whistles)and simplified user interfaces.