FSX/P3D. The only difference between the quality you get from DreamFlight and FlyTampa & FlightBeam is: None! That's just how good this developer is! Here is a quick note from the developer: "Hey guys, Work on Quito airport continues (SEQM), we've been very busy developing a high quality/realistic terminal. Project is alive and moving along in a good direction. As many of you know, personal situations cause delay's in these kind of projects which require a lot of time. However, here we are working really hard to deliver a great quality product for Q1 2016. MROC news will come in its own time. In the meantime take a look at what's coming for Ecuador. Happy Holiday's!"