AutoCAD is the basic software for drafting. Even still many small scale companies using AutoCAD for2D drafting.
The thing matters more here is about which to use?
Either AutoCAD Arch or Revit Arch.
It depends on the place and location you work.
For example, if we are working in India,97% of the company uses Revit Arch. whereas if we work in GCC, almost92% relays on Autodesk products.
I use both AutoCAD and ArchiCAD ? each software his advantages and disadvantages, for Autocad is better in2D, and Archicad is better in3D (sections....ect)....we talk for architects.