30+ years experience doing Architecture, Media, Graphic Design, 3D modeling & now learning BIM . . . use formZ, Vectorworks, AutoCAD & now figuring out REViT. . . well figured REVIT out but am going to shift over to ArchiCAD which is a superior program, runs on mac natively and doesn't have inane "rental" policy - cost to own REViT over 10 years = $25,000 !!! Insane of Autodesk. Go Graphisoft!!!