Almost zero learning curve coming from AutoCAD
After using AutoCAD LT for 30 years I transitioned to ProgeCad effortlessly. Within 15 minutes I was making a drawing that took only a few minutes longer than it would have if I was using AutoCAD, and that was only because the look of the icons are a little different. Most of the icons were in the same location that I had on my old system. Plus you can even import your exact icons/custom icons from AutoCAD. I highly recommend it to anyone who is currently thinking of switching. Back in the day I bought a perpetual license from AutoCAD and they would not give me an activation key when I had to switch computers.