I've been using ProgeCAD since release 2014 together with AutoCAD Building Design Suite 2013. ProgeCAD 2014 I found to be a great alternative to AutoCAD as it was a near seamless transition, It did have some drawbacks, one being that it did not have a 'Deselect All' command on the right click menu. I highlighted this to ProgeCAD support who I found to be very helpful in responding\resolving any issues I encountered. I upgraded from 2014 to 2016