Therefore Autodesk see an opportunity to move into a market they do not control and over time Mac will in my opinion overtake PC in the architectural field. The maority of young graduates are Mac based and want to use Macs in their profession (not go backwards to PC). Politically Mac is missing out on a huge market and so are AutoDesk. If an Architectural is Mac based most are then using VectorWorks and Cinema4D. Architecture is one of the last design fields to move onto this OS, mainly because the array of programs have not been available. I would estimate that 75% of publishers, film editors, graphics designers worth their salt use Macs. Use this option if you plan to use a lot of their software on one computer. You are licensed directly through AutoDesk using a serial number.
Option 1: Register at Autodesk and download software there. It is widely regarded that Macs are the preferred choice to the designer because of their excellent handling of the Adobe Suite of programs as well as being more efficient and stable compared to their PC counterparts. There are two options for obtaining AutoCad and AutoDesk Software. The 'home family user' is currently a PC based market due to the fact that PCs are much more affordable for people who just surf the web and play a few games.
Although there are no 'official' stats about what designers use, the 5%-95% is for all computers worldwide in all markets.