Because Microsoft decided to drop Flight Simulator, I decided to purchase X-Plane v10 to support continued development.
At any rate, my concern is with the modeling of systems within an aircraft. For instance, with the default Cessna 172 in a "cold and dark" state, ATC could still be heard. The battery, avionics, alternator, etc., were all off.
Also, when I was on the ground at KBPT, I started changing frequencies, and I was able to listen to ATIS information from KSGR -- which is too far away to be heard from the ground at KBPT.