If you want to create architecture, whatever modelling program you choose be sure it works well with Sketchup. (export/import). There are reasons for Sketchup popularity among professional architects. I am talking of people who have used 3ds max since the beginning.

Sketchup alone is not enough though, you must have a 'real' modeling program to complement it. For example C4D which works well with Sketchup. Also you need the professional version of Sketchup...