There is simply no other way to say it that this is the most excellent add-on out there. The plane is perfectly modelled in every aspect and is really following physical laws in all aspects. Everything is simulated and this makes the plane feels more alive than anything else than I have ever experienced. Also the interface on how to communicate with fueling, crew, ground handler and so on a very well done. Initially I thought that it would be an annoying feature but after a few flights it is a much faster way of getting going than any other simulation I have had and it actually is quite fun interacting with the different people. I also really enjoy the third party implementations like Simbrief flight plan download and getting METAR or ATIS from around the world or via VATSIM directly into your FMC. This has changed the way of flying. This really is an add-on worth every single cent that it costs.